Khi² value (AskiaAnalyse)

If you want to display the Khi² value (sometimes also called Chi² or Chi Squared ), the number of Degrees of Freedom and the probability, you must insert a new calculation and select Khi2 test in calculation type as follows:

To customise the caption shown at the bottom of the table, click advanced options... and insert the following askiascript:

• Khi2: ??K??
• The number of degrees of freedom (dof): ??D??
• The probability to accept the hypothesis ??INVP??
• The probability to refuse the hypothesis: ??P??

For example:

The percentage represents the risk of making an error.

You can format the number as follows:

1. In the calculation properties, click number formatting....
2. De-select (clear) use default.
3. In digits after decimal point, specify the number of digits you require.

The value  is calculated as follows:

where  is the count observed in sample i and  is the expected count in the global sample N.