Question

a pet store has 7 cats. here are their weights (in pounds).
15, 16, 9, 9, 7, 8, 10
find the mean weight of these cats.
if necessary, round your answer to the nearest tenth.

pounds

Explanation:

Step1: Calculate the sum of weights

$$15 + 16+9 + 9+7 + 8+10=74$$

Step2: Calculate the mean

The formula for the mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $n = 7$ (the number of cats) and $\sum_{i=1}^{n}x_{i}=74$.
$$\bar{x}=\frac{74}{7}\approx10.6$$

Answer:

$10.6$