Repeated use of the same test typically results in different scores. How does classical test theory account for this?
a. poor test validity
b. systematic variability
c. random error
d. inattention
c
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A sample of n = 9 scores is selected from a normal population with a mean of ยต = 80 and a standard deviation of ? = 12 . The probability that the sample mean will be greater than M = 86 is equal to the probability of obtaining a z-score greater than z = 1.50
Indicate whether the statement is true or false
Which term refers to actions that lessen or eliminate problems after they have appeared?
A. primary preventions B. secondary enhancements C. secondary preventions D. primary enhancements
WPPSI is to WAIS as
A) creativity is to intelligence. B) child is to adult. C) male is to female. D) former is to current.
______ are procedures used to summarize, organize, and make sense of a set of scores.
A. Descriptive statistics B. Correlations C. Parametric statistics D. Experimental designs