Question

Find the mean of first five natural numbers.

Answer 1

First five natural numbers are 1, 2, 3, 4 and 5.

Mean of the first five natural numbers =$\frac{\mathrm{Sum}\mathrm{of}\mathrm{the}\mathrm{given}\mathrm{observations}}{\mathrm{Number}\mathrm{of}\mathrm{given}\mathrm{observations}}$

=$\frac{1+2+3+4+5}{5}=\frac{15}{5}=3$
Hence, mean of the first five natural numbers is 3.