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Question

The mean for the data $$6, 7, 10, 12, 13, 4, 8 ,12$$ is:

A
$$9$$
B
$$6$$
C
$$7$$
D
$$8$$
Solution
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Correct option is A. $$9$$
We have,
$$x_i=6,7,10,12,13,4,8,12$$

$$\therefore \text{Mean} =\dfrac{\text{Sum of all the observations}}{\text{Total number of observations}}$$

$$=\dfrac{6+7+10+12+13+4+8+12}{8}$$

$$=\dfrac{72}{8}=9$$

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