Question: solve the solution in the tabel The grouped frequency table shows the length of service in years of sample employees who have been working for

solve the solution in the tabel

The grouped frequency table shows the length of service in years of sample employees who have been working for a company for at least ten years. Calculate an estimate of the variance of the length of service of these employees. Solution: Mean x=nfx= s2=n1f(xix)2=

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