Question on: JAMB Mathematics - 2024
Find the standard deviation of 2,3,8,10 and 12
A
3.9
B
4.9
C
5.9
D
6.9
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Correct Option: A
Here's how to calculate the standard deviation:
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Calculate the mean (average): Mean = (2 + 3 + 8 + 10 + 12) / 5 = 35 / 5 = 7
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Calculate the deviations from the mean:
- 2 - 7 = -5
- 3 - 7 = -4
- 8 - 7 = 1
- 10 - 7 = 3
- 12 - 7 = 5
-
Square the deviations:
- (-5)^2 = 25
- (-4)^2 = 16
- 1^2 = 1
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