ASSIGNMENT 2 HUM 3032 ENGINEERING MATHEMATICS 3

GROUPING ASSIGNMENT (PAIR WORK : 2 PERSONS IN A GROUP)

Question 1 A firm’s monthly sales revenue (in RM’000) for the first six months of 2007 are given below :

Month Sales Revenue (RM’000)

January 3.8

February 4.1

March 4.4

April 4.7

May 5.5

June 6.2

Present the above data graphically by using SIMPLE BAR CHART. Question 2 Consider the following table which gives the number of employees at a company subdivided into age categories for each 3 years (as of 1 January).

AGE

YEAR

2011 2012 2013

Under 20 20 and under 40 40 and under 60 60 and over

30 150 90 30

40 100 50 10

15 45 75 15

Present the above data graphically by using :

i) COMPONENT BAR CHART ii) PERCENTAGE COMPONENT BAR CHART

Unit 3 : Statistics

Data in Graphical Form

Question 3 Consider the following information concerning absenteeism at three factories; A, B and C in 2010, 2011 and 2012. Table below shows details of the number of working days lost due to absenteeism at each factory :

COMPANY

YEAR

2010 2011 2012

A B C

40 20 10

40 25 15

60 20 32

Present the above data graphically by using MULTIPLE BAR CHART. Question 4 The data regarding causes of accidents in factories are given below. Draw a BAR CHART to represent the data given above.

Causes Percentage of Occurence

Faulty machinery Electrical Disturbance Delay in Repairs Mechanical Failure Others

30% 20% 35% 10% 5%

Answer the following questions:

a) Which cause is responsible for the maximum number of accidents in

factories? Which cause is the minimum?

b) Can you think of one of the “other”causes? Question 5 A company’s costs for the last year have been broken down as follows :

Salaries and wages Equipment costs Raw materials Miscellaneous costs

COST (RM’000)

500 200 150 50

Present the above data graphically by using PIE CHART.

Question 6 In a town, 1800 cars were stolen in a year. The table show information about the times of day in which they were stolen.

a) Work out the angles for each sector. b) Construct the PIE CHART. c) What fraction of cars were stolen between midday and 6pm. Write your answer in its simplest terms. All of your working and answers must be done by using computer. You are required to submit the assignment (hardcopy) within a week. Due date : 27/3/2014 (Thursday) by 2.00pm

Time Number of cars

Midnight to 6 am 700

6 am to midday 80

Midday to 6 pm 280

6 pm to midnight 470

Time unknown 270