2. 外语
  3. In statistics, the mathematical mean is obtained by dividing the sum of a group of scores by the number of scores.

In statistics, the mathematical mean is obtained by dividing the sum of a group of scores by the number of scores.

admin2010-01-14  80
问题 In statistics, the mathematical mean is obtained by dividing the sum of a group of scores by the number of scores.
选项 A、total
B、square
C、numerator
D、list
答案A
解析
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