Question

The scores 12,17,15 and x have a mean of 13. What is the value of x

Answer 1

The mean is the sum of the values divided by the amount of values.

So the mean is represented here by

`(12+17+15+x)/(4)=13`

Solve for
`x`:

`(12+17+15+x)/(4)=13`

`\rightarrow(44+x)/(4)=13`

`\rightarrow 44+x=52`

`\rightarrow x=8`