Country A has a higher mean IQ than does country B.Based on previous research,country A probably has _____ levels of happiness than does country B and a _____ standard deviation among happiness scores.
A)lower;smaller
B)lower;larger
C)higher;smaller
D)higher;larger

Question

Quizplus · Accepted Answer

Research has shown that there is a positive correlation between higher IQ levels and higher levels of happiness. Therefore, country A (with a higher mean IQ) is likely to have higher levels of happiness than country B. Additionally, research has also shown that there is a negative correlation between IQ and standard deviation in happiness scores, meaning that as IQ levels increase, the variation in happiness scores tends to decrease. Therefore, country A (with a higher mean IQ) is also likely to have a smaller standard deviation among happiness scores.

Country a Has a Higher Mean IQ Than Does Country