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The following information relates to a sample of size 60 , $\sum x^2=18000$, and $\sum x=960$. Then, the variance is
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2845 Upvotes
Verified Answer
The correct answer is:
44
44
Since, variance $=\frac{\sum x_i^2}{n}-\left(\frac{\sum x_i}{n}\right)^2$
$$
=\frac{18000}{60}-\left(\frac{960}{60}\right)^2=300-256=44
$$
$$
=\frac{18000}{60}-\left(\frac{960}{60}\right)^2=300-256=44
$$
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