Which girl is most likely to experience puberty first?
A) Melissa, who is a European-American competitive gymnast
B) Jaeda, who is an overweight AfricanAmerican
C) Salma, who lives in a poverty-stricken area of Afghanistan
D) Cherish, who is an underweight EuropeanAmerican
Answer: B
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The process of mitosis results in new cells containing identical genetic codes. That is, unless what occurs?
a. Reduction division b. Cell death c. Mutations d. Neural pruning
In which of the following situations would you be most likely to use the mean as a measure of central tendency?
a. You want to report data on family income so we know how families are doing. b. You want to measure something that has a number of outliers. c. You want to report the average weight of airline passengers so that the pilot can estimate the weight of the plane. d. Your boss wants to know what size T-shirts to order for the next company picnic.
Two variables are said to be correlated when scores on one variable
A) are unrelated to the scores on the second variable. B) are related to the scores on the second variable. C) cause the scores on the second variable. D) are different from the scores on the second variable.
Improvement in memory probably indicates:
a. enhanced encoding of information. b. increased efficiency in retrieving stored information. c. the result of experiences with the environment. d. all of these.