Question

find a. the mean, b. the deviation from the mean for each data item, and c. the sum of the deviations in part (b) for the following group of data items 50, 100, 75, 50, 125 a. the mean is (simplify your answer)

Explanation:

Step1: Calculate the sum of data items

$$50 + 100+75 + 50+125=400$$

Step2: Calculate the mean

The number of data items \(n = 5\). The mean formula is \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\).
$$\bar{x}=\frac{400}{5}=80$$

Answer:

\(80\)