maritime illegal oil trading and unemployment in nigeria ... vol13... · officers of the nigeria...
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JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
MARITIME ILLEGAL OIL TRADING AND UNEMPLOYMENT IN NIGERIA
Ikpechukwu Njoku andChijioke Akpudo
Department of Transport Management Technology, Federal University of Technology, Akure *E-mail of the author: [email protected]+234-803-664-5117
Abstract
This study investigates the relationship between maritime illegal oil trading and unemployment in Nigeria
from 1995-2012. By employing the E-views econometric software, the unit root, co-integration and
Granger causality tests were carried out on the secondary data set, to make it agreeable to the
application of the vector autoregressive (VAR) modeling of the ordinary least square multiple regression.
It was revealed that the volume of oil theft as an explanatory variable met the a priori expectation with its
negative coefficient, but together with the one-year lagged variables of the dependent variable, was
statistically significant in terms of contributions to the dependent variable. Generally, the study draws a
conclusion that maritime illegal oil trading has contributed significantly to the level of unemployment in
Nigeria. The work suggests that sophisticated modern technology should be employed in the fight against
oil theft and that the law enforcement agencies should live up to this challenge.
Keywords:Illegal oil trading,unemployment, cointegration,vector autoregressive
Introduction
Crude oil, which is indisputably the lifeblood of
modern economy, has now become the most
essential commodity in the world. Thus, no nation
today can survive without oil. This prompted Smil
(2008) to describe it as the ―lifeblood of modern
world‖, adding that, ―without oil, there would be
no globalization, no plastic, little transport, and a
worldwide landscape that few would recognize‖.
Yergin (2008) also calls it ―the world‘s most
important resource‖.
The Nigerian economy is dependent on the
exploitation of crude oil and the nation‘s future is
very much tied to this commodity (Okere, 2013).
In fact, oil and gas resources account for over 90%
of Nigerian export and foreign exchange earnings
and over 70% of total Nigerian revenue
(Ekuerhare, 2002). This prompted Wilson (2012)
to state that the increase or otherwise in crude oil
production affects directly the revenue base and
development of the Nigerian state. Oil is now the
mainstay of Nigeria‘s economy. Unfortunately, the
same resource is being savagely stolen in copious
quantities on daily basis (Adeboboye, 2013).
The upsurge of oil theft in the maritime domain of
Nigeria in recent times is very alarming. Currently,
Nigeria is losing over 300,000 barrels of crude oil
per day (bpd) to oil theft, pipeline vandalism and
related criminal vices in the oil sector (Akpan
2013; Olusola, 2013; Odemwingie and Nda-Isaiah,
2013; Okere, 2013). In spite of the efforts of the
Federal government to curtail the situation by
increasing its security spending in recent years and
devoting millions of naira annually to hire private
security firms as well as equipping men and
officers of the Nigeria Security and Civil Defence
Corps (NSCDC), incessant destruction of pipelines
and other oil facilities as well as trade in stolen oil
by criminal cartels with international connections
have continued unabated (Ugwuanyi, 2013;
Mernyi, 2014). This indicates that the huge
investments of public funds on the safety of oil
facilities have not yielded the desired results. In
effect, the Nigerian economy is in a precarious
situation. She is facing an economic emergency
unprecedented among the oil producers of the
world. Something urgent needs to be done to
reverse the ugly trend. For instance, Nigeria has
been tagged the most country plagued by oil theft
among her contemporaries of Indonesia, Russia,
Iraq and Mexico. Statistics of oil theft among these
major oil-producing countries shows that Nigeria is
losing as much as 400,000bpd which is equivalent
to losses of US$1.7billion a month (Dalby, 2014).
This is a colossal loss compared to a total theft of
5,000 to 10,000bpd and just 2,000 to 3,000bpd in
Mexico and Indonesia respectively (Dalby, 2014).
Thus, oil theft or illegal oil trading in the Nigeria‘s
maritime domain poses a challenge that threatens
the very foundation of the oil industry and by
extension the Nigerian economy (Garuba, 2012).
Oil theft is carried out at different levels and
quantities; hence there are various methods in
which oil theft operations are carried out in the
Niger Delta. The most popular method for stealing
the crude oil is to puncture the pipeline conveying
the product from one point to the other and tap it at
the point where it had been punctured (Adegbite,
2013). Asuni (2009); Katsouris and Sayne (2013)
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
opine that there are three operational methods of
oil theft in the Niger Delta. These are: (1) a minor
and small-scale pilfering of condensate and
petroleum product destined for local market; (2)
direct hacking into pipelines or tapping with a hose
from wellhead through practical removal of the
‗Christmas tree‘and (3) excess lifting of crude oil
beyond the licensed amount and using forged bills
of lading. While the first is less significant in that it
is conducted by local people who hide under the
cover of violence in the Niger Delta region, the
second category brings more technical
sophistication into the business with the stolen
product placed in small barges and taken straight
into the sea where it is loaded into larger barges
(mother ships) in return for money and weapons
used to fuel violence. The last category speaks
solely about a spoilt system facilitated by official
corruption in that it involves the use of forged bills
of lading, ―issued by a carrier to a shipper, listing
and acknowledging receipt of goods for transport
and specifying terms of delivery.‖
There are various factors engendering the
persistent thriving oil theft activities in the
Nigeria‘s maritime domain. Adegbite (2013) states
that there are many perceived reasons for engaging
in crude oil theft. The reasons which vary from the
mundane to the absurd include (a) poverty; (b)
greed; (c) lack of respect for national economic
survival; (d) get rich quick syndrome; (e) lack of
gainful employment ; (f) exploiting the loopholes
in the criminal justice system to circumvent the
law ; (g) evolving culture of impunity from the
wrong perception that some people are above the
law; (h) weak institutional structure to checkmate
criminals; (i) malice; and (j) bad governance
(corruption, incompetency), just to mention a few.
Igbuku (2014) also identifies some of the
underlying causes of this scourge to include
poverty, community-industry expectation
mismatch, corruption, unemployment, ineffective
law enforcement and poor governance. He adds
that high unemployment, for instance has created a
huge population of idle young people who are
easily lured to oil related crimes. These crimes in
turn are reinforced in the absence of clear deterrent
measures, arising from the non-prosecution of
alleged perpetrator.
The Niger Delta youths are not adequately engaged
in the production activities in the region. Human
Rights Watch (2004) and Ejibunu (2007:16) attest
to the fact that the number of unemployed youths
is increasing in the region (among whom are the
university graduates), despite the numerous oil
multinationals in the region. Most worrisome is the
fact that some of the oil multinationals operating in
the region hire the services of their high manpower
personnel from outside the region, while the few
that are hired from the region are forcefully
disengaged, thereby increasing the number of
unemployed youths. The unemployed youths
among whom are the disengaged staff of the oil
multinationals with technical knowledge on how to
manipulate the oil facilities, resort to pipeline
vandalism and oil theft as a means of engaging
themselves economically and providing means of
livelihood. This heightens the oil theft activities in
the region.
As noted by Brock (2012), due to years of neglect,
marginalization and underdevelopment of the
Niger Delta by the Federal Government and the
Multinational Oil Companies (MNCs) operating in
the region, rings of organizes criminal groups,
called ―oil bunkerers‖ in our local parlance, has
evolved in the creeks and along our territorial
waters, who specializes in stealing, illegal refining
and transporting crude oil to the international black
market. Similarly, Vidal (2013) states that some
Niger Delta communities freely admit their role in
the theft of oil but blame continuing poverty and
pollution of their farmlands fishing waters for their
actions. ―The government and oil companies are
collecting our oil and we don‘t have jobs or money
so we have to collect the oil and refine our own‖,
says a man in the village of Bolo near where an
illegal refinery was set up. Apparently, due to
joblessness and poverty, the Niger Delta youths see
oil theft or illegal oil trading as a legitimate
business.
Oil theft has been identified as the biggest threat to
Nigeria‘s economy. Its socio-economic impact
includes environmental degradation, loss of
economic activities for the communities, loss of
revenues to the government resulting in inadequate
funding for development initiatives, increased
criminality in Niger Delta region, lack of security
due to illegal activities and infiltration of
international collaborator and bad image for the
country (Duru, 2013; Okere, 2013). Consequently,
crude oil theft has led to declaration of force
majeure and the money shared by the three tiers of
government in Nigeria in 2013 and 2014 was
erratic. In the first quarter of 2013 alone, Nigeria
lost about N191 billion ($1.23 billion) due to drop
in crude oil production, arising from incessant
crude oil theft and vandalism along the major
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
pipelines within the Niger Delta, (NNPC, 2013).
Daily crude oil production during the period
fluctuated between 2.1 and 2.3 million barrels per
day (mbpd) compared with the projected estimate
of 2.48mbpd. Expectedly, the fall between actual
production and forecast in first quarter of 2013
resulted in a drop in crude oil revenue of about
$1.23 billion (N191 billion) that should have
accrued to the Federation Account (Mernyi, 2014).
Also, due to the loss of oil revenue to the oil
thieves, Nigeria can no longer export crude oil
above two million barrels per day as opposed to
budgetary provision of 2.5mbpd (Olateju, 2013).
Nigeria is no longer selling enough crude oil to
meet budgetary provisions.
The government is failing to meet some of its
obligations and domestic debt is rising rapidly. For
instance, the country targeted 2.53mbpd
production, according to its financial plans for the
year 2013, a projection it failed to meet due to oil
theft. Ogbeifun (2014) noted that the negative
impact of vandalism and crude oil theft include the
destruction of aquatic and farmlands, economic
sabotage which explains the shortfall of Nigeria‘s
2014 budget from $29.3 billion in 2013 to $23.3
billion in 2014 and divestments by some
International Oil Companies (IOCs) with attendant
job losses thereby compounding the
unemployment situation in Nigeria. The colossal
loss of revenue to oil theft was succinctly captured
by Gaskia (2013).
Attacks on oil production facilities have led to
several shutdowns and declaration of force majeure
by the IOCs, ultimately resulting in loss of revenue
to the oil companies as well as the government
(Alohan, 2013). The activities of oil thieves in the
Niger Delta has led to several shut-ins and shut-
downs of pipelines and crude oil production
respectively by the IOCs and thus resulted in
decline in production capacity as well as loses of
revenues to the companies. Force majeure is a
legal clause that allows a company to walk away
from a supply contract – owing to theft and
sabotage. The IOCs operating in Nigeria are
counting heavy losses as surge in crude oil theft
and supply disruption have negatively impacted on
their earnings (Asu, 2013). For instance in
September 23, 2013 Shell Petroleum Development
Corporation (SPDC) had to close its trans-Niger
pipeline, which carries 150,000bpd because of
leaks due to theft, less than a week after it had been
reopened. In the process of oil theft, pipelines are
vandalized and oil is spilled. Consequently, there
will be urgent need by the oil companies to repair
the pipelines and clean up of oil spills in the
environment and this involves huge capital
expenditure and it invariably leads to lose of
revenues to the oil companies. The money that
could have been spent on other areas of oil
exploration and production are (now) used for
pipeline repair, maintenance and cleaning oil spills
(Alawode & Ogunleye, 2013). The SPDC has
consistently declared force majeure on its
operations between 2009, 2010, 2011, 2012 and
2013. This was due to the activities of oil thieves
who had damage its pipeline thus disrupting
production. Nigeria Agip Oil Company (NAOC) in
September 2013 declared a force majeure
regarding crude oil lifting at the Brass Terminal
and suspended its activities in Bayelsa State,
following the intensification of oil theft activities
and the vandalism of the 10-inch Kwale-Akri-
Nembe-Brass oil delivery line. In April, 2013, the
SPDC; shut-down the 150,000bpd Nembe Creek
oil pipeline due to the urgent need to clear away
illegal connections (Alohan, 2013).
Another explosion and fire at a crude theft point on
the SPDC‘s facility at Bodo West in Ogoniland
also forced the company to shut the Trans Niger
Pipeline (TNP), in June 2013, deferring some
150,000bpd. The SPDC shut down again Trans
Niger pipeline that produces 150,000bpd on July
16, 2013 due to leakage from vandalism by oil
theft. Shell shut down again the 150,000bpd at the
Trans Niger pipeline on 16th September, 2013
barely a week after it reopened the facility.
Another shut-in occurred on Wednesday
September 18, 2013 following reports of a leaking
crude theft point at Bodo west in Ogoniland. The
SPDC declared force majeure on Bonny light
exports on October 10, 2013 due to increase crude
oil theft resulting in 300,000 barrels shut in from
two key pipelines - Trans Niger pipeline (TNP) at
B-Dere, Nonwa-Tai and Bodo west (Olusola,
2013; Bello, 2013). The frequent illegal tapping of
pipelines is often very crude and causes frequent
pipeline leaks. This forces oil companies to
shutdown production while crucial repairs are
conducted (Sun, 2013). A total of 189 crude theft
points were repaired on the Trans Niger pipeline
(TNP) and Nembe Creek Trunkline (NCTL)
between January and September 2013 due to oil
theft (Bello, 2013). The objectives of this study
were to establish a relationship between maritime
illegal oil trading and unemployment and to raise
prediction models on the relationship between the
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
maritime illegal oil trading and unemployment in
Nigeria.
Methodology
This section deals with how data and the
information used in the work had been gathered
and analysed. It also deals with research design,
method of data collection and types of information
generated.The study covered the period from 1995-
2012.
Research design
This study is designed to empirically investigate
the illegal oil trading in the Nigeria maritime
domain. By employing the E-views econometric
software, the study made use of the unit root,
granger causality and co-integration tests in order
to basically produce the regression model thus,
corresponding to the core interest area of the study
namely, the relationship between the illegal oil
trading and unemployment level in Nigeria. This
relationship describes model 7.
Sources of data
As aforementioned, this study is designed to
empirically investigate the illegal oil trading in the
Nigerian maritime domain with respect to
unemployment covering the period of 1995-2012.
Only secondary data were used in the analysis and
were derived from the publications of the Central
Bank of Nigeria, National Planning Office,
National Bureau for Statistics,Nigeria National
Petroleum Corporation (NNPC) and Nigerian
Maritime Administration and Safety Agency
(NIMASSA).
Data analysis methods
The data set were analyzed by using two
approaches namely; the Descriptive Statistics and
Inferential Statistics.While the inferential statistics
were employed to analysis the formulated
hypothesis, other objectives of the study were
however, actualized with the use of descriptive
statistics.
Test of hypothesis
The hypothesis formulated was tested with a linear
regression model with ordinary least square
properties. Hence, a multiple regression approach
was adopted. The analysis involved model
specification and testing of the hypothesis. For the
hypothesis, we made the unemployment level
(UNRATE) the dependent variable.
Test statistics
The time series data for the period, 1995-2012,
were fitted into the linear function. This was to
enable us predict the level of the dependent
variable (UNRATE) that can be achieved given
known levels of the illegal oil trading explanatory
variables. The test statistics therefore, includes the
Coefficient of Correlation (R), Coefficient of
Determination (R2), the analysis of variance
(ANOVA/F-ratio) and the t-distribution (t-test).
While the ANOVA/F-test establishes the
significance or otherwise, of the model as a whole,
the coefficient of correlation seeks to test the
strength or magnitude of the relationship between
the dependent variable and the component of
illegal oil trading as explanatory variable. The t-
test seeks to test the extent of contribution or level
of significance of the illegal oil trading explanatory
variable to the dependent variable.
Test of the model significance
The first test carried out under the hypothesis
testing was a test of the model significance. This
seeks to test for the significance of the model as a
whole. There are two ways to accomplish this; the
analysis of variance or the coefficient of
determination, R2.
The Analysis of Variance approach
This statistical tool aims at splitting the variations
of a variable, for example, in the hypothesis, the
regressand (UNRATE) with its component parts,
variations in the dependent variable, that are
accounted for by the explanatory variables (illegal
oil trading variables), the regressors, that is, the
different sources of growth in the UNRATE as
produced by the illegal oil trading components; are
called the Explained Variations. Other sources not
thus explained are due to random or chance
factors. These are estimates of the population
disturbance variable ‗u‘ and are represented by ‗e‘,
otherwise referred to as the Residuals or error
term.
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
Table 1: A Hypothetical ANOVA Table
Source of
Variation
Sum of Squares Degree
of
Freedo
m
Mean Square
Error
F-Statistic
Regressi
on ( ) K-1
MSESS
MS RSS
Residual ∑( )
N-k
F-Tabulated
Total
Variation ∑( ) (
)
N-1
Decision:
if Fcal>Ftab reject
Ho and Accept Ha
For the hypothesis, the regression equation is designated as follows;
For example, Rearranging equation 1, we have;
( )
( )
Summing both sides of equation 3 we get;
∑
∑( )
In the Regression, ∑
(estimate of the
population disturbance), is given by ∑
otherwise called the Residual Sum of Squares
(RSS) ∑ ( ) is the sum
of squares of the deviation of the unemployment
rate( ) variables from their mean. While
the explained sum of squares ( ) is gotten with
the formula, ( ) ( ) Where;
Therefore,
The Coefficient of Determination, R2 approach
Another way to test for the model significance is
through the coefficient of determination (R2). The
R2 is calculated from the regression and it gives the
proportion of the total variation in the dependent
variable, actual unemployment ratethat is
explained by the independent variables, here the
various illegal oil trading components. R2, from
the sample is a statistical estimate of the
population, e2, (row squared).
The value of R2 ranges between 0 and 1;
-0.0 - - - - -1.00 Inverse or negative variation
0.00 - - - - 0.29 Highly insignificant, positive
0.30 - - - - 0.49 Insignificant, positive
0.70 - - - - 1.00 Highly significant, positive
In setting up the test, the following hypothesis is
tested:
HO:ρ2 = O i.e., the regressors, the growth in
the illegal oil trading components,
or sources of growth in the
unemployment rate, in a given
year have no significant
relationship with the actual growth
of the unemployment rate for that
year.
HAρ2 > O (One-tailed test of significance) i.e.,
at least, there is a significant
relationship between one of the
independent variables and the
actual growth of the
unemployment rate.
Decision rule
If F-ratio calculated is greater than the F-ratio
tabulated or theoretical F, at alpha () – level of
significance, and (K-1), (N-K), degrees of
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
freedom, then we Reject Ho; and Accept Ha, and
thus state that there is some truth in the estimated
model (i.e. the regression model is significant since
the regressors significantly account for the
variation in the dependent variable (UNRATEt).
( ) ⁄
⁄
Test of significance of the explanatory variables,
t-Test
Having established the significance of the
estimated model, as a whole, the next step that
followed was the test of the various regressors in
bringing about this result. This is carried out
through the test on the estimated parameters of the
regressors. The test-statistics or student t-test is
calculated as follows;
( )
Where;
βk = Estimate of the population parameters for the
regressors (i.e. illegal oil trading components)
Se(βk) = Standard error of the estimate
Decision rule
|
( )|
level of
significance, we Reject H0 and Accept HA: to
conclude that the variable belongs significantly to
the model.
Specification of model The actual dependent variable (unemployment
rate) figures for the period 1995 – 2012, herein
represented by the symbols, UNRATEt was
regressed on the various components of illegal oil
trading components figures for the corresponding
period. These components of illegal oil trading are
hereby represented as follows:
VASt = Total value of stolen oil in
year t;
VOSt = Total volume of stolen oil in
year t;
The dependent variable, however, is as specified:
UNRATEt = Level of Nigeria unemployment
in year t;
Data estimation
Here, we note that the data set was estimated by
carrying out the following tests; unit root, co-
integration and Granger causality tests. While the
unit root test sought to test for the stationarity of
the data set not to produce spurious results, the
informational content of the model were confirmed
by the use of the co-integration test which helped
to establish the nature of the model, whether short-
or long-run relationships existed among the
variables of the model. Finally, with the granger
causality test, the direction of the effects was thus
established.
Data presentation and analysis
As aforementioned, the data set for our estimation
was generated from the records and websites of the
NIMASSA, the CBN and various publications
from other related agencies, comprising of Nigeria
data set on volume of oil theft, value of oil theft,
gross domestic product, the level of
unemploymentandgross domestic per capita for the
period, 1995-2012.
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
Table 2: Volume of Oil Theft, Value of Oil Theft, GDP & Unemployment Rate
S/N YEAR VOS VAS GDP UNRATE GDPC
1 1995 229565000 91.76 1933211.6 1.9 256
2 1996 230031800 111.74 2702719.1 2.8 313
3 1997 257947000 107.56 2801972.6 3.4 314
4 1998 249207600 76.26 2708430.9 3.5 272
5 1999 257791600 105.13 3194015 17.5 288
6 2000 242350000 357.68 4582127.3 13.1 660
7 2001 337322415 821.7 4725086 13.6 679
8 2002 390463495 1079.1 6912381.3 12.6 682
9 2003 237250000 786.6 8487031.6 14.8 676
10 2004 193450000 812.8 11411067 13.4 727
11 2005 156950000 1161.6 14572239 11.9 783
12 2006 255500000 2240.6 18564595 13.9 804
13 2007 255500000 2304 20657318 12.7 832
14 2008 292000000 4056 24296329 14.9 862
15 2009 694925910 6655.5 24794239 19.7 889
16 2010 283078530 3525 33984754 21.1 926
17 2011 386091290 6975 37543655 23.9 973
18 2012 179514150 3239.5 39650864 22 1016
Source: NIMASA, CBN, various years
Data estimation
In this section, our objective is to establish the
stationarity of the entire data set employed in the
estimation. When a particular data set is found to
be stationary, it then suffices that the data set can
be relied upon for the estimation, having
eliminated the possibility of spurious results.
Table 3: Unit Root Test for the Variables Employed
Augmented Dickey-Fuller Unit Root Test
Variable T-statistic Critical value Order of
Integration
Significanc
e
VOS -3.527962 -3.052169 1(0) 5%
VAS -8.649341 -3.920350 1(1) 5%
GDP -3.287799 -3.065585 1(1) 5%
UNRATE -5.271891 -3.920350 1(1) 1%
Source: E-views 6.0 Econometric Package.
Unit root test results
The unit root test was carried out using the
Augmented Dickey Fuller test in order to
determine whether the data set was stationary and
the order of integration. From table 3, it could be
observed that only the volume of oil was stationary
at level. Other variables turned out to be stationary
at first difference. Generally, the data set can be
relied upon for analysis as it shows no evidence of
producing spurious results.
The co-integration results
Having established the stationarity of the data set,
the Johansen co-integration test was the applied,
which adopts no exogenous variables as it is based
on the vector auto regression (VAR) modeling.
Under here, we try to establish the presence of a
short or long-run equilibrium existing between the
variables and hence the various estimated
regression equation results. These results are
presented in Table 4.
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
Table 4: Co-integration and Test Results
Johanssen Co-integration Test
Mod
el
Number of Co-
integrating
Equations
Nature of
Equilibriu
m
1 Maritime Illegal Oil Trading and Poverty Rate 1 Long-run
2 Maritime Illegal Oil Trading and
Unemployment Rate
Nil Short-run
Source: E views 6.0 Econometric Package.
From Table 4, whereas model 1 shows evidence 1
co-integrating equation which is of long-run
relationships, model 2reveals the presence of short-
run relationship existing between the variables.
The Granger causality results
The result here does show that the pairs of
variables have not, in fact produced significant
causal effects. However, we observe a one-
directional effect from the value of illegal oil
trading to the poverty level.
Hence, more specifically, the level of
unemployment granger causes the per capita
income (GDPC) at 1%.
Test of hypothesis
The Influence of Illegal Oil Trading on
Unemployment in Nigeria
Here, one lead equation is to be estimated and the
hypothesis states as follows:
HO: There is no significant relationship between
the level of Illegal Oil Trading and the level of
Unemployment in Nigeria.
The sub-hypotheses from HO are as follows;
HOa: The value of Illegal Oil Trading has
no significant effect on the
level of Unemployment in
Nigeria.
HOb: The volume of Illegal Oil Trading
has no significant effect on the
level of Unemployment in
Nigeria.
HOc: The one-year lagged variable of
Unemployment has no significant
effect on the Unemployment in
Nigeria.
Table 5: Results of the Global Statistics for the Influence of Illegal Oil Trading on Unemployment
Test-statistic Model
Least Square, With Lag
R-square 0.733
Adjusted R-square 0.671
S.E of Regression 3.556986
Sum of squared residual 164.4779
Log likelihood -43.41324
Durbin-Watson stat 2.412149
Mean depend. Var 13.81176
S.D. depend. Var 6.202105
Akaike info criterion 5.58
Schwarz criterion 5.77
Hannan-Quinn criterion 5.60
F-statistic 11.88151
Prob(F-statistic) 0.000502
NB:*** = significant at 1%; ** = significant at 5%; * = Not significant. F-ratio tabulated DF (3, 14); 1%
= 5.56, 5% = 3.34, t- ratio DF (14); 1% = 2.98, 5% = 2.14.
Source: E-views 6. Statistical Package
Table 5 shows the results of the global statistics as produced under the model 7
Test of model significance – ANOVA
In order to confirm the specification status of our
model, we employ the ANOVA. The aim of using
this method was to split the total variations of a
variable (around its mean) into components which
may be attributed a specific (additive) causes. For
instance, variations in the dependent variable
(UNRATE) that are accounted for by the
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
explanatory variables (maritime illegal oil trading
variables) - independent variables, that is, the
different sources of growth in the UNRATE as
produced by the maritime illegal oil trading
components. To simplify the analysis we assumed
that there was only one systematic factor
influencing the variable being studied. Any
variation not accounted for by this (explanatory)
factor was assumed to be random or (chance)
variation, due to various random happenings.
Decision rule
Employing the E-views software, we have that F–
ratio calculated (11.88151) > F–ratio tabulated
(5.56, 3.34), at both 1% and 5% levels of
significance respectively. Since F–ratio calculated
is greater than the F–ratio tabulated, we reject Ho
and conclude that there is a significant relationship
between the level of illegal oil trading and
unemployment in Nigeria. The estimated
regression result is presented as follows:
The impact of illegal oil trading on
unemployment in Nigeria (test of
sub-hypotheses)
The sub-hypotheses from HO are as follows;
HOa: The value of Illegal Oil Trading has
no significant effect on the
level of Unemployment in
Nigeria.
HOb: The volume of Illegal Oil Trading
has no significant effect on the
level of Unemployment in
Nigeria.
HOc: The one-year lagged variable of
Unemployment has no
significant effect on the
Unemployment in Nigeria.
Having tested the significance of the model, we
took a step further to test the significance of the
illegal oil trading in contributing to the total
variation in the level of unemployment in Nigeria.
This was achieved through the use of the student t–
test (refer to the regression result in Table 6). Also,
in Table 6, only the one-year-lagged variable of
unemployment proved to be significant
contributors to the level of unemployment since
the t-ratio calculated (2.97) > t-ratio critical (2.14)
at 5% level of significance.
Table 6: t- statistic table-UNEMPLOYMENT
NB:*** = significant at 1%; ** = significant at 5%; * = Not significant. T-ratio DF (14); 1% = 2.98,
5% = 2.14.
Source: E-views 6.0 Statistical Package.
Variable X1,Value of Oil
Theft,
VASt
X2,Volume of Oil
Theft,
VOSt-1
X3,One-year Lagged
Variable of
Unemployment,
UNRATEt-1
Test Statistic
Coefficient of the
Variable
0.000960 -1.35E-09 0.570696
Standard Error 0.000723 1.04E-08 0.192271
T-Statistic Calculated 1.327820
NS
0.129581
NS
2.968194 ***
T-Statistic Tabulated
1%
2.98 2.98 2.98
T-Statistic Tabulated
5%
2.14 2.14 2.14
Significance 0.207 0.899 0.011
JORIND 13(2) December, 2015. ISSN 1596-8303. www.transcampus.org/journal; www.ajol.info/journals/jorind
Resultsanddiscussion Model 7 examined the relationship between illegal
oil trading and the level of unemployment in
Nigeria. This result revealed that a significant
relationship actually exists between the illegal oil
trading and the level of unemployment in Nigeria,
with also only the one-year lagged variable of
unemployment rate being statistically significant
at 5%. In addition, this model, with an R-squared
of 73.3% has shown that the changes in the
explanatory variables taken together, have been
able explain at least, 73% of the total variations in
the dependent variable, unemployment rate, thus,
leaving only about 27% to chance occurrence. The
estimated regression result is presented thus;
Again, model 7 above reveals that, only the
volume of illegal oil trading, met the a priori
expectation, bearing a negative coefficient.
Conclusion
This study essentially focused on the impact of
illegal oil trading on the level of unemployment in
Nigeria covering the period, 1995-2012. Having
this as the objective in mind, study found that a
significant relationship exists between illegal oil
trading and the level of unemployment in Nigeria
and that none of the explanatory variables met the
a priori expectation in terms of the signs of their
coefficients and contribution to the level of
unemployment in Nigeria. Thus, this study has
been able to empirically determine the relationship
between maritime illegal oil trading and
unemployment in Nigeria. Hence, through the
determination of the relationship, prediction model
was produced for predicting the level of
unemployment to attain given that level of illegal
oil trading is known. The model presents ready
working tools for policy makers to essentially
manipulate key variable like the level of
unemployment through effective reductions in the
illegal oil trading in Nigeria and in this lies the
modest contribution of this study. The study
therefore concludes that the volume of illegal oil
trading is high and is in consequence of the level
of unemployment in Nigeria and suggests that
sophisticated modern technology should be
employed in the fight against oil theft and that the
law enforcement agencies should live up this
challenge.
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