A set of n = 25 pairs of scores (X and Y values) has a Pearson correlation of r = 0.80. How much of the variance for the Y scores is predicted by the relationship with X?

A) ?0.36 or 36%
B) ?0.20 or 20%
C) ?0.80 or 80%
D) ?0.64 or 64%


D

Psychology

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Martin has the genotype to grow to be 6'3" tall, but his family is poor and he is malnourished as a child. As a result, he only grows to be 5'11". The difference between Martin's genotype and his phenotype can be explained by the concept of __________

a) polygenetic inheritance. b) dominant-recessive patterns. c) multifactorial inheritance. d) sex-linked inheritance.

Psychology

Given what is known about the population changes in the past 10 years, which country is likely to see the highest total fertility rate (TFR)?

a. United States b. Canada c. South Korea d. India

Psychology

Depression in terms of ______ suggests that depressed mood protects the organism by reducing energy expenditure, thereby protecting itself and saving energy for use in the future.

a. habituation b. resource conservation c. social competition d. attachment

Psychology

The space shuttle Columbia disaster, the Bay of Pigs invasion, and the decision to cover up the Watergate break-in were all mentioned in your text as examples of

A) social facilitation. B) deindividuation. C) groupthink. D) group polarization.

Psychology