Ada's professor tells her class that the average score on the last test was 72 points. Ada wants to know if most students actually scored near 72, or if the grades were more spread out, with many students doing much better or worse than a 72
What statistic could Ada ask her professor to calculate to help answer her question?
A) standard deviation
B) median
C) mode
D) correlation coefficient
Answer: A
Rationale: The standard deviation is a measure of variability around the mean. It can be thought of as an estimate of the average distance from the mean.
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Many people believe that research has provided conclusive
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Raphael can only become sexually aroused when he is wearing his wife's slip. Although she had caught him earlier wearing her slip, he had promised to stop the behavior
Recently, his wife was cleaning house and found several of her slips beneath a cushion on the sofa. What paraphilic condition is Raphael most likely to have? A) Exhibitionistic disorder B) Transvestic disorder C) Frotteuristic disorder D) Voyeuristic disorder