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!