The _____ is a measure of variability around the mean of a distribution
a. mean
b. median
c. mode
d. standard deviation
Answer: D
Rationale: Think of it as an estimate of the average distance from the mean.
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East wick and Finkel (2008) examined men's and women's preferences during a speed dating event. They found significant gender differences in what men and women reported as important mate characteristics before the event began—differences that ____ once they actually started interacting with the potential mates at the event
a. increased b. stayed constant c. disappeared d. became subtler
In calculating power we calculate a statistic called delta (?). This statistic is
a. the effect size. b. the sample size. c. a combination of the effect size and the sample size. d. the difference we are looking for.
Like mood disorders, eating behavior can be classified as
a. nonserious vs. serious. b. normal, mild, moderate, less severe, and more severe. c. an all or none phenomenon. d. strongly gender and culture related.
Though a bad diet is a direct risk factor for diabetes (Hu et al., 2001), research now suggests that this behavior is a major factor as well:
a. not getting enough sleep b. smoking, especially heavy smoking c. not receiving enough sunlight d. using sugar substitutes on food and in drinks such as coffee