Question

Find the mean of first five prime numbers.

Answer 1

First five prime numbers are 2, 3, 5, 7 and 11.

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

=$\frac{2+3+5+7+11}{5}=\frac{28}{5}=5.6$
Mean of the first five prime numbers is 5.6.