第23题: [单项选择]Throughout most of their lives, human beings perpetually learn and increase their mental capacities( ). A. actually B. readily C. finally D. constantly 参考答案:D
第30题: [单项选择]Dispersion is defined as the variability around the central tendency and can be divided into absolute dispersion and relative dispersion. Which of the following is NOT described as a measure of relative dispersion() A. Range. B. Sharlle ratio. C. Coefficient of variation. 参考答案:A 答案解析: