Question

find the mean of 1st ten natural numbers

Answer 1

Avg. = Sum/no. Of terms = n*(n+1)/n = n+1 = 10+1 =11

Answer 2

First twn natural numbers are 1,2,3,4,5,6,7,8,9,10.
no. of observations =10
mean=1+2+3+4+5+6+7+8+9+10/2
=55/2
=27.5