,dfrac (ntimes 100)(n)} B S=-|||- dfrac {1)(n),... ,dfrac (ntimes 100)(n)} C S=-|||- dfrac {1)(n),... ,dfrac (ntimes 100)(n)} D S=-|||- dfrac {1)(n),... ,dfrac (ntimes 100)(n)}

记录一个小班一次数学考试的平均分数(充以百分制记分)，用n表小班人数，其样本空间是( )

A

B

C

D

参考答案与解析：

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