Question

What is the mean of the numbers 21, 23, 76, 47, 55, 135, 45, 30, 17?

Answer 1

`50` (2sf)

Explanation:

When calculating the mean simply add all of the values together then divide by the number of values a general formula could be:

`barx = (sumx)/n`

Where `x` is the values in the list and `n` is the number of values.

`barx = (21 + 23 +76 + 47 +55 +135 + 45+ 30+17)/9`
`barx = 50`(2sf)