Question

find the mean for the following group of data items. 5, 2, 3, 8, 9, 6, 5, 5 the mean is (type an integer or a decimal.)

Explanation:

Step1: Sum the data items

$$5 + 2+3 + 8+9 + 6+5 + 5=43$$

Step2: Count the number of data items

There are \(n = 8\) data items.

Step3: Calculate the mean

The formula for the mean \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\). Substitute \(\sum_{i=1}^{n}x_{i}=43\) and \(n = 8\) into the formula: \(\bar{x}=\frac{43}{8}=5.375\)

Answer:

\(5.375\)