Yhe following data relate to the age of a group of Govt. employees Calculate the arithmetic mean and standard deviation : Age 50-55 45-50 40-45 35-40 30-35 25-30 20-25 No. of 45 80 110 170 Employees. 25 30 40

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23
The following data relate to the age of a group of Govt. employees
Calculate the arithmetic mean and standard deviation :
Age
50-55 45-50 40-45 35-40 30-35 25-30 20-25
No. of
45
80
110
170
40
Employees.
25
30
Transcribed Image Text:23 The following data relate to the age of a group of Govt. employees Calculate the arithmetic mean and standard deviation : Age 50-55 45-50 40-45 35-40 30-35 25-30 20-25 No. of 45 80 110 170 40 Employees. 25 30
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