Question

Find mean of first 15 prime numbers

Answer 1

The first 15 prime numbers are 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47

2+3+5+7+11+13+17+19+23+29+31+37+41+43+47

————————————————————————

15

=21.87

Answer 2

Given:

First 15 prime numbers

To find:

The mean of these numbers

Solution:

The required value of the mean is 21.8.

We can obtain the mean by adding all the given prime numbers and dividing them by the total numbers given.

The prime numbers given are as follows-

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47.

The total numbers=15

The sum of the prime numbers=2+3+5+7+11+13+17+19+23+29+31+37+41+43+47

=328

The required mean=Sum/total terms

Using the values, we get

=328/15

=21.8

Therefore, the required value of the mean is 21.8.