Question on: JAMB Mathematics - 2020
Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13
A
2
B
4
C
12
D
17
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Correct Option: A
(x - x)\(^2\) = 28
S.D = \(\frac{\sqrt\sum (x - x)^2}{N} = \frac{\sum d^2}{N} = \frac{\sqrt{28}}{7}\)
= \(\sqrt{4}\)
= 2
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