Question 24
The sum of 15 observations of a data is (434 + x). If the mean of the data is x, then the value of x is
Solution
The correct option is A.
$$mean=\frac{sum of observations}{total observations}$$
$$\implies$$ $$x=\frac{434+x}{15}$$
$$\implies$$ $$15x-x=434$$
$$x=\frac{434}{14}=31$$
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