Question

find the mean of first four natural numbers ​

Answer 1

First 4 natural numbers are :- 1,2,3,4

mean = sum of given observations / numbers of observations

then .......

1+2+3+4/4

=> 10/4

=> 5/2

=> 2.5

Hope it helps.......

Answer 2

Answer:

2.5

Step-by-step explanation:

The general formula for calculating the mean of $x_1, x_2, x_3,.........x_n$ is given by :

$\bar x =\frac{x_1 +x_2+ .............x_n}{n}$

We all know that first four natural numbers are 1,2,3 and 4. So their mean is given by

$\bar x = \frac{1+2+3+4}{4} =2.5$

Generalization:

Mean of first 'n'  natural number is  given by  (n+1)/2.

#SPJ2