Find the mean, variance and standard deviation for the first six odd natural numbers.
Odd natural numbers = 1, 3, 5, 7, 9, …
First Six Odd Natural Numbers = 1, 3, 5, 7, 9, 11
To find: MEAN
We know that,
To find: VARIANCE
xi | ||
1 | 1 – 6 = -5 | (-5)2 = 25 |
3 | 3 – 6 = -3 | (-3)2 = 9 |
5 | 5 – 6 = -1 | (-1)2 = 1 |
7 | 7 – 6 = 1 | (1)2 = 1 |
9 | 9 – 6 = 3 | (3)2 = 9 |
11 | 11 – 6 = 5 | (5)2 = 25 |
= 11.67
To find: STANDARD DEVIATION
= 3.41