Question 16.3.2: Find the weighted mean of the numbers given in the following......

Business Mathematics [1175844]

Find the weighted mean of the numbers given in the following table.

Frequency	Value
4	3
2	5
1	7
5	8
3	9
2	10
1	12
2	13

Step-by-Step

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According to this table, the value 5 occurred 2 times, 8 occurred 5 times, 12 occurred 1 time, and so on. To find the mean, multiply each value by the frequency for that value. Then add the products. Add the values in the Frequency column to find the total number of values and then divide.

Weighted mean = $\frac{\mathbf{154}}{\mathbf{20}} = 7.7$

Product	Frequency	Value
12	4	3
10	2	5
7	1	7
40	5	8
27	3	9
20	2	10
12	1	12
$\underline{\ \ \ 26}$	$\underline{\ \ \ 2}$	13
154	20	Totals

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