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【OG20-P155-63题】
The table shows the numbers of packages shipped daily by each of five companies during a 4-day period. The standard deviation of the numbers of packages shipped daily during the period was greatest for which of the five companies？
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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比较五组数字的差值，离散程度最高的就是B
ElisaGo
standard deviation 标准差——反应离散程度（每项到平均值的距离之和） 目测BE离散程度较大 B 平均数20，四项都与之差10 E 平均数60，两项与之差10 所以选B
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2022-04-29 10:09:22
Jeaninla
离散率是看各个点离平均值的远近，而不是最大数和最小数之间的差距。
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2021-01-30 12:32:34
1289311ww
We see that the data points of Companies B and E are most spread apart. Thus, the largest standard deviation will come from either Company B or Company E. Let’s calculate the mean (arithmetic average) for Company B and E.
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2019-12-30 17:27:46
1289311ww
We may recall the the standard deviation represents how far the data points are from the mean.
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2019-12-30 17:26:10
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