Answer to Question #125118 in Statistics and Probability for Jack

Question

The average monthly salary of 86 employees has been calculated as ¢1516. Employee No. 87 earned ¢1621. What is the mean salary of the entire 87 employee?

Answer 1

Solution :

Mean of n data = sum of n data / n

given mean of 86 employees = 1516

$\frac{(x1+x2+.....+x86)}{86} = 1516$

(x1+x2+.....+x86)= 1516*86

(x1+x2+.....+x86)=130376 -----------------------(i)

Mean of 87 values =$\frac{ x1+x2+.....+x86+x87}{87} = \frac{130376+ 1621}{87}$

=$\frac{131997}{87}$

= 1517.21

answer: mean salary of entire 87 employees= 1517.21