Question

1. the table shows the number of books borrowed from the school library from monday to friday last week. find the mean number of books borrowed from the school library. books borrowed from school library monday tuesday wednesday thursday friday 120 148 165 147 180 mean number of books =

Explanation:

Step1: Calculate the total number of books

$$120 + 148+165 + 147+180$$
$$=(120 + 180)+(148 + 147)+165$$
$$=300+295 + 165$$
$$=300+(295 + 165)$$
$$=300 + 460$$
$$=760$$

Step2: Calculate the mean

The number of days from Monday to Friday is \(n = 5\).
The formula for the mean \(\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}\), here \(\sum_{i=1}^{5}x_{i}=760\) and \(n = 5\)
\(\bar{x}=\frac{760}{5}=152\)

Answer:

\(152\)