Question

question 1
find the mean of the following numbers: 14, 22, 18, 9, 7, 11, 28
15.5
16.5
17
14

Explanation:

Step1: Calculate the sum of the numbers

$$14 + 22+18 + 9+7 + 11+28=109$$

Step2: Count the number of data points

There are \(n = 7\) numbers.

Step3: Calculate the mean

The mean formula is \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\). Substitute \(\sum_{i=1}^{n}x_{i}=109\) and \(n = 7\) into the formula: \(\bar{x}=\frac{109}{7}\approx15.57\approx15.5\) (rounded to one decimal place)

Answer:

15.5