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MATHEMATICS

JAMB 2003 - Question 47

Mathematics 2003 JAMB Past Questions - Question 47: The mean of the numbers 3,6,4,x and 7 is 5.Find the standard deviation.

Choose the most appropriate option for the gap .

The mean of the numbers 3,6,4,x and 7 is 5.Find the standard deviation.

A: 3

B: √2

C: √3

D: 2

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Correct Answer

Explanation

;x = EX/N = 20+x/5