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In a group of 10 people, the median height is 70 inches, the average (arithmetic mean) height is 70.5 inches, and the range of the heights is 12 inches. If an additional person who is 74 inches tall joins the group, which of the three statistics must change?
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954696aed
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平均值一定会变
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253922kuk
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题目说的msut change，中位数可能是不变的，因为第六个数可能还是70，极差可能也是不变的，因为74可能不是最大的值所以最后只有平均值是一定变的
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构造一个数列：64，70，70，70，70，70，70，70，75，76 这个数列加了74后极差和中位数都不变
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[数学 ]【新版】冲分救命题 -12222
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[数学 ]【新版】冲分救命题 -12221
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[数学 ]【新版】冲分救命题 -12220
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[数学 ]【新版】冲分救命题 -12219
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[数学 ]【新版】冲分救命题 -12218
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[数学 ]【新版】冲分救命题 -12217
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[数学 ]【新版】冲分救命题 -12216
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[数学 ]【新版】冲分救命题 -12215
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[数学 ]【新版】冲分救命题 -12214
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[数学 ]【新版】冲分救命题 -12212
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[数学 ]【新版】冲分救命题 -12211
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[数学 ]【新版】冲分救命题 -12210
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[数学 ]【新版】冲分救命题 -12209
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[数学 ]【新版】冲分救命题 -12208
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[数学 ]【新版】冲分救命题 -12207
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[数学 ]【新版】冲分救命题 -12206
[数学 ]【新版】冲分救命题 -12205
List S : 1,2 ,3, k,2k If k< 2, which of the following numbers could be the median of the five numbers in list ? Indicate all such numbers.
[数学 ]【新版】冲分救命题 -12204
In 1990 approximately what percent of the total population of neighborhood was foreign-born with Europe as region of origin?
[数学 ]【新版】冲分救命题 -12203
A list of the names of the people of the entire 1990 foreign-born population in neighborhood was generated, with each person’s name appearing once. The names of 2 different people will be randomly selected from the list. Which of the following is closest to the probability that both names selected will be names of people whose region of origin was “Other”?
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