Answer to Question #268707 in Human geography for Ratty

Question

Calculate the arithmetic mean of the rainfall for the following cases.

1. All seven stations

2. All stations within the borders of the area.

Answer 1

The arithmetic mean can be found as a total sum of all elements divided by the number of elements:

$$\mu_a=\frac{a_1+a_2+a_3+...+a_n}{n}.$$