why would you use the Turkey-Kramer procedure

3 answers

What is your subject?

"College" includes hundreds of subjects. Please clarify.

Do you mean Tukey-Kramer procedure? Please clarify.

If you post your subject and your thoughts on this question, we'll be glad to help you.
Basic Business Statistics, the choices are:
To test for normality
To test for homogeneity of variance
To test independence of erors
To test for differences in pairwise means
http://en.wikipedia.org/wiki/Tukey-Kramer_method

Of course, it tests for pairs of means having differences greater than some specified value.