Question

Find the mean of first six multiples of 5.

Answer 1

First six multiples of 5 are 5, 10, 15, 20, 25 and 30.

Mean of the first six multiples of 5 =$\frac{\mathrm{Sum}\mathrm{of}\mathrm{the}\mathrm{given}\mathrm{observations}}{\mathrm{Number}\mathrm{of}\mathrm{the}\mathrm{given}\mathrm{observations}}$

$\frac{5+10+15+20+25+30}{6}=\frac{105}{6}=17.5$