fTest

swordfish.function.fTest()

Conduct an F-test to compare the variances of two samples.

Parameters:

• X (Constant) – A numeric vector indicating the first sample for the F-test.

• Y (Constant) – A numeric vector indicating the second sample for the F-test.

• ratio (Constant, optional) – A positive floating number indicating the ratio of the variances of X and Y in the null hypothesis. The default value is 1.

• confLevel (Constant, optional) – A floating number between 0 and 1 indicating the confidence level of the test. It is optional and the default value is 0.95.

Returns:

A dictionary with the following keys:

• stat: a table with p-value and confidence interval under 3 alternative hypotheses

• numeratorDf: degree of freedom of the numerator

• denominatorDf: degree of freedom of the denominator

• confLevel: confidence level

• method: “F test to compare two variances”

• fValue: F-stat

Return type:

Constant