Execute F-test, which checks the difference of variances between groups.

You can access from 'Add' (Plus) button.

Value Column - Numeric column whose variances is calculated.

Group Column - Label column of 2 groups.

Population Variance Ratio (Optional) - The default is 1. The hypothesized population variances ratio.

Type of Alternative Hypothesis (Optional) - The default is "two.sided". What kind of alternative hypothesis to be used. This can be

"two.sided"

"less"

"greater"

Confidence Level (Optional) - The default is 0.95. The level of confidence interval.

Subset (Optional) - a vector to specify a subset of observations to be used.

NA Action (Optional) - The default is "na.fail". This changes the behaviour of NA data. Can be one of the following.

"na.omit"

"na.fail"

"na.exclude"

"na.pass"

NULL

Take a look at the reference document for the 'var.test' function from base R for more details on the parameters.