FTest

Returns the P-value of an F-test on the variances of two sets of data. It tests that the variances in the two sets are not significantly different. For example, given the test scores from public and private schools, this function enables you to determine whether diversity levels between the two school types are significantly different.

Decision	Reality: H0 is correct	Reality: H1 is correct
Accept H0	No problem	Type 1 error
Reject H0	Type 2 error	No problem

Definition

P-value is basically a probability of making a Type 2 error.

FTest returns the p-value for the hypothesis test in the following form:

• :

  

• :

  

  

  

  

Syntax

FTest <Hypothesis type, Ratio> (Argument1, Argument2)

Usage Notes

The following conditions are invalid:

• Argument1 and Argument2 contain a different number of data points
• The variance of either data set is zero