Question

A psychologist obtains a p-value of 0.03 for an ANOVA examining the difference between three treatment groups. They are using an alpha (?) of 0.05. They want to compare each group to the other (for a total of three comparisons). What alpha level should they use for each of these comparisons?

Answer 1

Result:

A psychologist obtains a p-value of 0.03 for an ANOVA examining the difference between three treatment groups. They are using an alpha (?) of 0.05. They want to compare each group to the other (for a total of three comparisons). What alpha level should they use for each of these comparisons?

The Bonferroni correction is an adjustment made to P values when several dependent or independent statistical tests are being performed simultaneously. To perform a Bonferroni correction, divide the critical P value (?) by the number of comparisons being made.

Here there are three comparisons, the new critical P value would be ?/3

= 0.05/3 = 0.0167