Author Question: A teacher split a 50-item test into odd and even items, scored each half, and then correlated odd ... (Read 130 times)

panfilo · **on:** Jun 20, 2018

A teacher split a 50-item test into odd and even items, scored each half, and then correlated odd scores with even scores. The correlation coefficient was .55 . What is the estimated reliability for the full 50-item test?

a. .80
b. .71
c. .69
d. .65
e. .60

Question 2

The reliability of a spelling test is .80 . If the test is doubled in length, the reliability of the test will be approximately

a. .80.
b. .84.
c. .89.
d. .90.
e. 1.60.