spss workshop by riaz

INTRODUCTION

TO

S P S S

STATISTICAL PAKAGE FOR SOCIAL SCIENCE

STATISTICAL PRODUCT AND SERVICE SOLUTION

NOW

Why we use SPSS???

• SPSS makes our work easy and save our precious time

• SPSS presents best tabulated and graphical output

• SPSS helps the users to analyze and manipulate the data within seconds.

• Basic concepts of statistics

• Sources of data for research

• How to Use data in SPSS???

• Description and practical of entering and editing statistical data in SPSS.

• Basic concept of measuring scales

• Analysis and manipulation of data in SPSS

• Questionnaire Design and SPSS

• Descriptive statistics and frequency distribution in SPSS

• Correlation and Regression techniques in SPSS

• Testing of hypothesis t-test and z-test in SPSS

What is statistics???

The branch of science which deals with the collection , organization ,summarization, analysis and interpretation of data.

Basic concepts of statistics

DESCRIPTIVE STATISTICSIt deals with the collection, classification ,summarization and presentation of data.

INFERENTIALSTATISTICSIt deals with the making inferences about population parameter on the basis of sample information or data.

Basic concepts of statistics

SAMPLE: A representative part of population

STATISTIC: A numerical value get from sample

POPULATION: A well-defined group of data

PARAMETER: A numerical value get from population

Basic concepts of statistics

Statistical data or simply data are the observations or recorded values of our interest.

Basic concepts of statistics

QUANTITATIVE DATA

Variable which we can measure is Quantitative data.

Example:

Height ,weight ,

velocity, speed

e.t.c

QUALITATIVE DATA

Variable which we cannot measure is Qualitative data.

Example:

Beauty, intelligence , happiness , satisfaction

e.t.c

DATA

Basic concepts of statistics

A characteristics of the individual ofthe population which can variesfrom person to person , objects toobjects and place to place is termedas variable.

Basic concepts of statistics

Variable

DISCRETE VARIABLE

A variable which can count but not measure is termed as discrete variable.

Examples:

No. of students in a school

No. of products sold

Name of days in a year

CONTINUOUS VARIABLE

A variable which cannot count but measure is termed as continuous variable.

Examples:

Height of student in a school

Weight of products

Length of plot

Basic concepts of statistics

There are two main sources

Primary source of data Secondary source of data

RESEARCHER

DECISION MAKING

PRIMARY DATA SECONDARY DATA

• It is published or unpublished data compiled by some other agencies or organization for some other purposes

• It involves direct investigation or first hand data or afresh data obtained by researcher.

PRIMARY SOURCE OF DATA COLLECTION

1) METHOD OF SAMPLE SURVEY

2) METHOD OF EXPERIMENTATION

• SAMPLING DESIGN

• MEASUREMENT SCALES

• QUESTIONNAIRE DESIGN

• QUESTIONNAIRE ADMINISTRATION

1) METHOD OF SAMPLE SURVEY

• LABORATORY EXPERIMENT

• FIELD EXPERIMENT

2) METHOD OF EXPERIMENTATION

Data editor

Output viewer

Syntax editorScript window

• Data Editor

Spreadsheet-like system for defining, entering, editing,

and displaying data. Extension of the saved file will be

“sav.”

• Output Viewer

Displays output and errors. Extension of the saved file will

be “spv.”

• Syntax Editor

Text editor for syntax composition. Extension of the

saved file will be “sps.”

• Script Window

Provides the opportunity to write full-blown programs,

in a BASIC-like language. Text editor for syntax

composition. Extension of the saved file will be “sbs.”

• Rows are cases: Each row represents a case or anobservation. For example, each individual respondentto a questionnaire is a case.

• Columns are variables: Each column represents avariable or characteristic that is being measured. Forexample, each item on a questionnaire is a variable.

• Cells contain values: Each cell contains a single value ofa variable for a case. The cell is where the case and thevariable intersect. Cells contain only data values. Unlikespreadsheet programs, cells in the Data Editor cannotcontain formulas.

(cases)

COLUMNS

Working is going on…………………

thanks

There are three level of measurements