When you plot how many times each score or category of scores appears in the data you have a(n)
A) scatterplot.
B) main effect.
C) interaction.
D) frequency distribution.
D
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A population of scores has µ = 80 . In this population, a score of X = 86 corresponds to z = +2.00 . What is the population standard deviation?
a. 2 c. 6 b. 3 d. 12
Night terrors can be distinguished from nightmares in that night terrors ____.
A. occur during REM sleep B. occur during NREM sleep C. are far more common in adults than children D. usually involve sleep talking
What was the most controversial claim in Arthur Jensen’s article, “How Much Can We Boost I.Q. and Achievement?”
a. IQ tests are biased in favor of Caucasians. b. Caucasians have higher levels of Level II intelligence than African Americans. c. Caucasians have higher levels of Level I intelligence than any other race. d. IQ tests measure Level 1 intelligence but fail to measure Level II intelligence.
Estimates suggest as many as __________% of all conceptions involve too many or too few chromosomes
a) 15 b) 25 c) 33 d) 50