Question

find the mean of this data set: 30, 25, 35, 20, 30, 28

Explanation:

Step1: Sum up the data

$$30 + 25+35 + 20+30 + 28=168$$

Step2: Count the number of data points

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

Step3: Calculate the mean

The mean formula is \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\), so \(\bar{x}=\frac{168}{6}=28\)

Answer:

\(28\)