Instructions
This calculator allows you to put in a significance level α to
find a critical value or enter a test statistic to find a pvalue.

Select the statistical distribution (model) at the bottom right.

The T, ChiSquare, and F distributions require degrees of freedom.
 Any degrees of freedom appear with the distribution name.

The input named for the model can be a test statistic or critical
value.
 Use the section at the bottom left to enter any value.

The other values will appear in the top section.
 A test statistic or critical value goes in the first cell.

The left, right, both, and middle cells are all areas or
probabilities.
 Results are rounded to six decimal places.