uc8

某公司的男职工数(单位:人)如下,该公司7月至10月份平均男职工人数为()人。
image.png

  • A300
  • B350
  • C400
  • D450
参考答案: B
解题思路: 本题考查时点序列的序时平均数的计算。本题属于间断时点、间隔相等的情况,利用公式blob.png因此选B。
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