Identify the type of procedure for estimating reliability that is illustrated in each of the following: a

Identify the type of procedure for estimating reliability that is illustrated in each of the following:

a. The same test was given twice to a certain group. The correlation between the scores on the two administrations of the test was .90.

b. The group’s scores on the odd items of a test were correlated with their scores on the even items of the same test: rxx = .95.

c. Alternate forms of the test were administered after 1 month, and results of the two administrations were correlated: rxx= .85.

d. The variance, the mean, and the number of items are used to estimate reliability