Server User Guides > Survey Tabulation > Statistical tests > Requesting statistical tests
 
Requesting statistical tests
To add or remove a chi-square, column proportions or column means test for the table, display the Preferences tab, and then click Modify. The Modify Table Statistics Test dialog opens: see Modify Table Statistics Test dialog.
For information on adding a paired preference test, see Adding a paired preference test.
Significance Level 1
You can select the significance level that you require for the column proportions and column means tests. The options are 1%, 5%, and 10%.
Significance Level 2
If you want to perform the column proportions or column means test at two levels of significance, select the second significance level. The options are 5% and 10%. Note that the value you select must be greater than that of the first significance level.
Small Base
By default, tests on rows or columns where the base is above the minimum base but below 100 are carried out, but * (asterisk) next to the result to indicate that the base size is small. You can enter a new value for the small base if required.
Minimum Base
By default, tests are not carried out on rows or columns where the base is below 30. Two asterisks (**) in the cell indicate this. You can enter a new value for the minimum base if required.
Use effective base
Uses the effective base instead of the simple weighted base in statistical tests on weighted tables. This option does not affect statistical tests run on unweighted tables.
For more information, see Weighted data.
Preferences tab: Menu commands
Copy
Copies all of the settings on the Preferences tab to the clipboard; you can then copy the settings to another table.
Paste
Overwrites all of the options on the Preferences tab with the contents of the clipboard.
Set as default for new tables
Select this option if you want to define these preferences for several tables. Any new tables that you create have the same types of cell content and all of the other options defined on the Preferences tab for this table.
Apply to all existing tables
Select this option to apply these preferences to all of your existing tables.
See
Modify Table Statistics Test dialog
Adding or removing a statistical test
Adding a paired preference test
Viewing diagnostics information for statistical tests
See also
Statistical tests