PSY 555 Homework 11


Chapter 7: #6,8,9,10,13,14,16,25 (for each problem involving t-tests, please list what type of test is appropriate to be used).


1.   Please describe the difference between within subjects and between subjects t-tests.  List the different types of each category of t-tests.


2.   Why do we need to test for homogeneity of variance when conducting a t-test?