The annual salaries of four men were Rs 5000, Rs 6000, Rs 6500, Rs 3000

(i) Find the Arithmetic Mean of their salaries.

(ii) Is this average typical to their salaries ?

(i) A.M. =$\frac { 5000+6000+6500+3000 }{ 4 } $

$\overline{ X } =\frac { \Sigma X }{ N } $ = $\frac { 20500 }{ 4 } $ = Rs 5125

(ii) This mean can be said as representative value of the series since the value of item are not too or too lo, therefore, this average is typical of their salaries.