Minimum base and small base values in statistical tests
By default, when you carry out a column proportions, column mean, net difference test, or paired preference test, if a table includes a base value that is below the recommended minimum base of 30, the test is not carried out. This is denoted by ** (two asterisks), which are put in the table instead of the result. If a table includes a base value that is above the minimum base but below a “small base” value of 100, the test is carried out, but * (asterisk) next to the test denotes that the base value is small. The annotations also indicate this.
To change the default minimum base and small base values
Do one of the following:
▪Enter new values in the Minimum Base and Small Base fields in the Preferences tab.
▪Set the MinBase and SmallBase properties in a script; for example:
TableDoc.Tables.MyTable.Statistics.ColumnProportions.MinBase = 50
TableDoc.Tables.MyTable.Statistics.ColumnProportions.SmallBase = 150
See also