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求下列20个数的平均数:306,312,306,308,314,304,318,311,313,315,314,310,320,300,316,320,312,314,315,312.

题目详情
求下列20个数的平均数:306,312,306,308,314,304,318,311,313,315,314,310,320,300,316,320,312,314,315,312.
▼优质解答
答案和解析
(306+312+306+308+314+304+318+311+313+315+314+310+320+300+316+320+312+314+315+312)÷20
=6240÷20
=312
答:这20个数的平均数是312.