In computing any percentile, including the median, from a frequency distribution, we assume the scores in an interval are
a. represented by the upper exact limit of the interval.
b. represented by the lower exact limit of the interval.
c. represented by its midpoint.
d. spread equally throughout the interval.
e. normally distributed around the midpoint.
Ans: d
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An authoritarian parenting style is seen in which one of the following examples involving junior high school students?
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The parents of 15-month-old Helen want to discourage her thumb sucking. When Helen takes her thumb out of her mouth, they give her a small cup of raisins, which she loves. The raisins represent
A. a negative stimulus. B. an unconditioned stimulus. C. a neutral stimulus. D. reinforcement.