The Decision to Use Either the Kuder-Richardson 20 (KR 20)or

Multiple Choice

The decision to use either the Kuder-Richardson 20 (KR 20) or the Kuder-Richardson 21 (KR 21) is based on whether: ​

A) the method used to determine reliability is the test-retest or the alternate form method.
B) correlation or regression is going to be used. ​
C) the items measure a homogeneous or heterogeneous behavior domain. ​
D) the item format is multiple-choice or true-false. ​