Spss workshop by riaz
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Transcript of Spss workshop by riaz
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INTRODUCTION
TO
S P S S
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STATISTICAL PAKAGE FOR SOCIAL SCIENCE
STATISTICAL PRODUCT AND SERVICE SOLUTION
NOW
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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.
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• 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
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What is statistics???
The branch of science which deals with the collection , organization ,summarization, analysis and interpretation of data.
Basic concepts of statistics
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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
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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
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Statistical data or simply data are the observations or recorded values of our interest.
Basic concepts of statistics
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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
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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
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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
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There are two main sources
Primary source of data Secondary source of data
RESEARCHER
DECISION MAKING
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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.
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PRIMARY SOURCE OF DATA COLLECTION
1) METHOD OF SAMPLE SURVEY
2) METHOD OF EXPERIMENTATION
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• SAMPLING DESIGN
• MEASUREMENT SCALES
• QUESTIONNAIRE DESIGN
• QUESTIONNAIRE ADMINISTRATION
1) METHOD OF SAMPLE SURVEY
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• LABORATORY EXPERIMENT
• FIELD EXPERIMENT
2) METHOD OF EXPERIMENTATION
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Data editor
Output viewer
Syntax editorScript window
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• Data Editor
Spreadsheet-like system for defining, entering, editing,
and displaying data. Extension of the saved file will be
“sav.”
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• Output Viewer
Displays output and errors. Extension of the saved file will
be “spv.”
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• Syntax Editor
Text editor for syntax composition. Extension of the
saved file will be “sps.”
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• 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.”
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• 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.
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(cases)
COLUMNS
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Working is going on…………………
thanks
There are three level of measurements