Question

find the mean of this data set. 86, 44, 58, 73, 65, 40

Explanation:

Step1: Calculate the sum of the data set

$$86 + 44+58 + 73+65 + 40$$
$$=(86 + 44)+(58 + 73)+(65 + 40)$$
$$=130+131+105$$
$$=366$$

Step2: Count the number of data points

There are \(n = 6\) data points.

Step3: Calculate the mean

The formula for the mean \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\), so \(\bar{x}=\frac{366}{6}\)

Answer:

\(61\)