A nonparametric statistical test should be used when _____
a. the population distributions are normal
b. more than two groups are compared
c. the values of the independent variable are skewed
d. the dependent variable represents either nominal or ordinal measurement
D
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Ray is having difficulty with his sex life because he reaches orgasm as soon as his penis enters his partner. Sometimes he reaches orgasm even before penetration. What is his likely diagnosis?
a) dyspareunia b) premature ejaculation c) nocturnal penile tumescence d) inhibited sexual desire disorder
At the political convention, the people are crowded together on the convention floor. Although the large group is a mixture of different gender, ages, and races with many different outfits, you easily group these people together based on the sign being held up in the middle of each group that bears their state's name. Your grouping was the result of which perceptual principle?
a. contiguity b. common region c. figure-ground d. continuation