spss overview
Post on 12-Jan-2016
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SPSS Overview
The opening screen
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The SPSS windows
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Obtain the data
• Download the Demo File from the data folder in the course Blackboard site
• Save it on the desk top• Open the saved file with SPSS
PASW (SPSS)
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Data EditorVariable
descriptions
Drop down menus
Action buttons
PASW (SPSS)
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SPSS ViewerDrop down
menus Action buttons
Navigation window
Output window
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SPSS Viewer – export results
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Syntax EditorDrop down
menus
Navigation window
Syntax window
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HELP!
PASW (SPSS)
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DATA MANAGEMENT WITH SPSS
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Data management with SPSS
• Read an existing data set– Action buttons: Open data document button– Menu: File → Open → Data
• Entering data – Menu: File → New → Data
• Select a subset of the data– Action buttons: Select cases button– Menu: File → Data → Select cases
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Select all the data for the Ottawa-Gatineau CMA
PASW (SPSS)
Close the original data set once the subset has been created.
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Additional hints on data management
• Defining variable labels– VARIABLE LABELS varname ‘variable label’.
• Define variable level of measurement– VARIABLE LEVEL varname (NOMINAL).
• Define values for code-set– VALUE LABELS varname 1 ‘label1’ 2 ‘label2’ ...
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Merging datasets
• Add new variables or add new cases• Both datasets must be open at the same time• Select one dataset to be the “master”
– The second dataset will be the source of the new cases or new variables
• BOTH datasets must have the same unique case (or record) identifier.
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UNIVARIATE STATISTICS
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Measures of central tendency Menu: Analyze → Descriptive Statistics → Frequencies
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Alternative method to obtain descriptive statistics
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Statistics and chart options
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Do females have a higher after-tax income than males?
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BI-VARIATE ANALYSIS
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Cross-tabulations
• Specify cell-level statistics– Row, column and total %– Chi-square– Other measures of
association– Measures of correlation
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Do women travel further to get to work?
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