问题
单项选择题
A distribution with a mean of 15 and a range of 2 to 25 would be:（）
A. normally distributed.
B. positively skewed to the right.
C. cannot be determine.
答案
参考答案：C
解析：
The distance to the left from the mean to the beginning of the range is 13. The distance to the right from the mean to the end of the range is 10. Therefore, the distribution is skewed to the left, which means that it is negatively skewed.