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WAEC Economics 2010 Paper

Question : 4

Total: 48

The sum of items divided by the number of items is the

Solution:

Concept:

The arithmetic average of a data set is called the mean.

Explanation:

The mean is calculated by adding all the items together.

Then, divide this total sum by the number of items.

For items

x_1, x_2, \dots, x_n

, the formula is:

\text{Mean} = \frac{x_1 + x_2 + \cdots + x_n}{n}

Here,

n

is the total number of items.

Therefore, the correct option is B.

Answer:

B. mean

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