Question

Liam wants to find the average of the following numbers. 53, 46, 57, 52, 49 He estimates the average as 50 and then finds the average. Which describes how close Liam is to his estimate?

Answer 1

You find the average by adding all of the numers and then divide by the ammount of numbers that were added:

$A=\frac{53+46+57+52+49}{5}\Rightarrow A=51.4$

So the average is 51.4 and therefore Liam was off by 1.4 units.