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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