用FX-50 計算mean同standard deviation既問題 (急用)

2007-06-10 2:58 pm
用FX-50 計算mean同standard deviation既問題 (急用)
An analysis of the register, for a random sample of 100 days, results in the following information on the number, X, of visitors per day

No. of visitors per day / No. of days
1-10,          13,
11-20,         33,
21-25,         17,
26-30,         12,
31-35,         8,
36-40,         5,
41-50,         5,
51-100,         7

以上題為例子
請問要點樣用FX-50 黎計算出mean同standard deviation??
要用d咩模式, 禁d咩制同埋最後顯示出黎既答案係咩?

下個星期就考, 好急用架!! 唔該哂!

回答 (1)

2007-06-10 6:23 pm
✔ 最佳答案
mode 3
shift AC(清data)
put data in
Eg: 5.5 X 13 M+
15.5 X 33 M+
25.5 X 17 M+
35.5 X 12 M+
. .......... ............
shift 1=mean
shift 2 = standard deviation


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