Question

the table shows the number of dogs walked by a dog walker each week for 3 weeks. what is the mean number of dogs walked per week for these 3 weeks? a 5 b 14 c 23 d 42

Explanation:

Step1: Recall mean formula

The mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $\sum_{i = 1}^{n}x_{i}$ is the sum of data - points and $n$ is the number of data - points.

Step2: Calculate the sum of data

The number of dogs walked each week are 5, 14, and 23. So, $\sum_{i=1}^{3}x_{i}=5 + 14+23=42$.

Step3: Determine the number of data - points

The number of weeks $n = 3$.

Step4: Calculate the mean

$\bar{x}=\frac{42}{3}=14$.

Answer:

B. 14