Question

Find the mean of squares of first five whole numbers.

Answer 1

Step: Using the formula of mean
First five whole numbers = 0, 1, 2, 3, 4
∴ Square of first five whole numbers
= $(0{)}^2$,$(1{)}^2$,$(2{)}^2$,$(3{)}^2$,$(4{)}^2$
= 0, 1, 4, 9, 16
Sum of numbers = 0+1+4+9+16 = 30
∴ Mean =$\frac{\text{(Sum of all numbers)}}{\text{( Number of observations)}}$
= $\frac{30}{5}$
=6
Hence, the mean of squares of first five whole numbers is 6