Question

The anithmetic mean of first four natural number is​

Answer 1

Answer:

2.5

Step-by-step explanation:

we can do this by 2 ways

1st method :-

1st 4 natural numbers are 1,2,3 and 4

arithmetic mean = (1+4) ÷2 = 5/2 = 2.5

we can use this method here as the no.s are in A.P.

2nd method :-

sum of all observations = 1+2+3+4 = 10

no. of observations = 4

therefore, mean = sum of all observations / no. of observations

= 10/4 = 2.5