# Chi-Square Test Options (One-Sample Nonparametric Tests)

**All categories have equal probability.** This produces equal frequencies among all categories in the sample.
This is the default.

**Customize expected probability.** This allows you to specify unequal frequencies for a specified
list of categories. Specify a list of string or numeric values. The
values in the list do not need to be present in the sample. In the Category column, specify category values.
In the Relative Frequency column,
specify a value greater than 0 for each category. Custom frequencies
are treated as ratios so that, for example, specifying frequencies
1, 2, and 3 is equivalent to specifying frequencies 10, 20, and 30,
and both specify that 1/6 of the records are expected to fall into
the first category, 1/3 into the second, and 1/2 into the third. When
custom expected probabilities are specified, the custom category values
must include all the field values in the data; otherwise the test
is not performed for that field.