Lab 8: Scale Type & Test Selection
Dr. R.G. Tonks Psyc 201 Camosun College
Names: _____________________________________________________
OPEN internet explorer
Go to website and download the following data files to your local area.
disertdat.sav / dcisdat.sav

Part I.  Chi2 test for two nominal grouping variables
Open the first data file using SPSS.  
If you are not sure of the variable labels please ask.

Click on Analysis then Descriptive Statistics then Crosstabs
Add the nominal variables that you wish to compare into the to Rows and Columns boxes

Check to see the statistics button to make sure the chi2 is checked
Click continue

Check the cells button to make sure that Observed, Expected, Rows & Columns are all checked.
Click on OK and let the analysis run

Look at the output and examine the percentages within the cells
and for the totals along the edges of the cells.

Where there is a cell with a big difference between the expected and observed frequencies it may be statistically significant. Was the Chi2 significant?
 

What conclusions can you make of this data?
 
 
 
 

Part II ANOVA for continuous dependent variables
Now go back to the data file and
Click on Analysis then Compare Means then One-way ANOVA
Add one nominal variable for the factor
Add some interval or ratio variables to the Dependent list

Check the Options button to be sure that Descriptive is checked
Click OK and let the analysis run

Look at the output and examine the Ns, Means, and Standard Deviations
for the dependent variables.
 

Look at the significance of the comparisons between variables entered.
 

Did any of the analyses show significance? What can you conclude from this data?
 
 



Open second data file and repeat this exercise
Note: you can also use the data file that you constructed several weeks ago for this practice