- Thread starter Yida
- Start date

For a two tail test, a pvalue could be say .5

In a one tail test, the pvalue would be .25

For a two tail test with a pvalue of -.8

The one tail pvalue would be .6 (which is 1-.8/2)

In a one tail test, the pvalue would be .25

For a two tail test with a pvalue of -.8

The one tail pvalue would be .6 (which is 1-.8/2)