Question

2) The mean of first n natural numbers is * 1 point

Answer 1

Solution :

Sum of first n natural numbers = n(n+1)/2

Mean = sum of observations ÷ no.of terms

Mean of 1st n natural numbers = [n(n+1)/2] ÷ n

= n(n+1)/2n

= (n+1)/2

Therefore,

Mean of first n natural numbers = (n + 1)/2