Statistics - Mean & Median

👨🏻‍🏫 學術台數學

[匿名]

2011-01-21 7:13 am

可否幫忙解答問題
Data Comparing Lifestyles in the U.S. and eight other countries
PCs Per100 People
U.S. 35.0
Germany 17.0
France 16.0
Britain 20.0
Netherlands 20.0
Sweden 18.0
Italy 11.5
Japan 14.0
Korea N.A

求Mean & Median??

更新1:

Thank you very much Mode = 35.0 ... right?? range = 35.0 - 11.5 = 23.5 ...right?? 這兩個不太明白。 Population variance = ?? Population standard deviation = ??

更新2:

N.A ... 是Not Available ... 是計0 or 不計呢??

回答 (1)

STEVIE-G™

2011-01-21 7:28 am

✔ 最佳答案

We sort the data from the smallest to the largest:
11.5,14.0,16.0,17.0,18.0,20.0,20.0,35.0

Mean=(11.5+14.0+16.0+17.0+18.0+20.0+20.0+35.0)/8=18.9375
Median=(1/2)*[(4th-data)+(5th-data)]=(17.0+18.0)/2=17.5

2011-01-21 17:59:02 補充：
Mode係指眾數,姐係出現頻率最多的DATA...係20.0(因為出現過2次)
Range就是最大-最小
Variance=√[(11.5-18.9375)²+(14.0-18.9375)²+..+(25.0-18.9375)²]
Standard Deviation=√Variance

2011-01-21 22:17:33 補充：
不用計的,因為根本不知道那個是什麼數值

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收錄日期: 2021-04-22 00:56:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110120000051KK02935

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