Question

Find the mean of first 5 prime numbers.

Answer 1

5.6

Explanation:

First five prime numbers:

`2,3,5,7,11`

Add them up:

`2+3+5+7+11=28`

Calculate the mean:

`(28)/(5) =5.6`

Answer 2

8.5

Explanation:

We need to find the mean of first five prime numbers . We know that the first five prime numbers are ,

`\sf\longrightarrow First \ 5 \ Prime\ numbers \ = 2, 3, 5 ,7,11`

We know that mean is ,

`\sf\longrightarrow Mean =(Sum \ of \ observations)/(Number\ of\ observations )`

Substitute the respective values ,

`\sf\longrightarrow Mean =( 2+3+5+7)/(2)`

Add the numbers in numerator ,

`\sf\longrightarrow Mean =( 17)/(2)`

Divide ,

`\sf\longrightarrow\boxed{\blue{\sf Mean = 8.5 }}`

Hence the mean is 8.5