An insignificant correlation between a mathematics reasoning test and a reading test would be desirable to show that the math test
a. is relatively free from irrelevant variance.
c. is unreliable.
b. has little validity.
d. has the desired reliability.
Question 2
The method for estimating test reliability that best accounts for all the possible sources of error is
a. administer different forms of the test at a single sitting.
b. administer the same form of the test on two different occasions.
c. administer different forms of the test to different subjects.
d. administer different forms of the test on two different occasions.
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If the following ions Ca2+, Cl-, Na+ and CO32- are placed in a test tube, the precipitate ...