Question

four cars get the following miles per gallon: 44, 40, 44, and 56. find the mean.

Explanation:

Step1: Sum up the values

$$44 + 40+44 + 56$$
$$=(44 + 44)+(40 + 56)$$
$$=88+96$$
$$=184$$

Step2: Divide by the number of values

The number of values \(n = 4\). The mean formula is \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\). So \(\bar{x}=\frac{184}{4}\)

Answer:

46