At a meeting of information systems officers for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer.
X f
1 10
2 4
3 16
4 8
5 2
How many employees were supervised by those surveyed?
15
40
108
123
The number of employees supervised can be calculated by multiplying the number of employees by the frequency for each case and then summing them up.
1*10 + 2*4 + 3*16 + 4*8 + 5*2 = 10 + 8 + 48 + 32 + 10 = 108
Therefore, the total number of employees supervised by those surveyed is 108.
Thus the answer is 108.