IB MAI HL Statistics & Probability Topic 4.1 Descriptive Statistics (id: b4eed30

本题目来源于试卷: IB MAI HL Statistics & Probability Topic 4.1 Descriptive Statistics，类别为 IB数学

[填空题]
The following table shows the number of overtime hours worked by employeey12xpc3c2 ufq1r o8 pws in a p2oxqf8 121 r pu3ccywa-mj)8a4 e s;j,ohqfl ha q9.27f+jo uvp7xy pasq h4 .a2 +,jupjjax7hf p ef9qvl)-m8;oo7y company.

It is known that the mean number of overtime hours is 1 .
1. Find the value of x .   
2. Find the standard deviation of the data. ≈   

参考答案:
空格1: 4±2%  空格2: 1.34±2% 


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