The following table shows the number of employees in a company and their ages. Find the mean of the ages.
Age (Years) 36 - 40 41 - 45 46 - 50 51 - 55 56 - 60
No. of Employees 7 6 9 5 3

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Solution

$x_{i} = 38, 43, 48, 53, 58 \sum f_{i} = 7 + 6 + 9 + 5 + 3 = 30 \sum f_{i} x_{i} = 266 + 258 + 432 + 265 + 174 = 1395 ¯ x = \frac{1395}{30} = 46..5$

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Age (Years)	36 - 40	41 - 45	46 - 50	51 - 55	56 - 60
No. of Employees	7	6	9	5	3

The following table shows the number of employees in a company and their ages. Find the mean of the ages.Age (Years)36 - 4041 - 4546 - 5051 - 5556 - 60No. of Employees 7 6 9 5 3

xi=38,43,48,53,58∑fi=7+6+9+5+3=30∑fixi=266+258+432+265+174=1395¯x=139530=46..5

The following table shows the number of employees in a company and their ages. Find the mean of the ages.
Age (Years) 36 - 40 41 - 45 46 - 50 51 - 55 56 - 60
No. of Employees 7 6 9 5 3

$x_{i} = 38, 43, 48, 53, 58 \sum f_{i} = 7 + 6 + 9 + 5 + 3 = 30 \sum f_{i} x_{i} = 266 + 258 + 432 + 265 + 174 = 1395 ¯ x = \frac{1395}{30} = 46..5$