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Mathematics Question on Mean, median, mode and standard deviation

A simple random sample consists of four observations 7, 8, 10, 7. The point estimate of population standard deviation is :

A

32\sqrt{\frac{3}{2}}

B

3\sqrt{3}

C

2.5

D

2\sqrt{2}

Answer

2\sqrt{2}

Explanation

Solution

The correct option is (D):

2\sqrt{2}