Question

Calculate the standard deviation of first 7 natural numbers. *

Answer 1

Answer:

the standard deviations of first 7 natural number is 2.16

Explanation:

the first seven natural no are 1,2,3,4,5,6,7

x x-bar

(x-xbar)²

9¹ 1-4=-3

4² 2-4=-2

1³ 3-4=-1

0⁴ 4-4=0

5

1 5-4=1

6

4 6-4=2

7

9 7-4=3

firstly mean of first seven natural no

=£x/n

mean=1+2+3+4+5+6+7/7=4

standard deviation

=√£(x-xbar)²/n-1

=√9+4+1+1+4+9/7-1

=2.16