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MathsGee is Zero-Rated (You do not need data to access) on: Telkom |Dimension Data | Rain | MWEB

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8,718 views
The variance of a sample of 81 observations equals 64. The standard deviation of the sample equals

a. 0
b. 4096
c. 8
d. 6,561
e. None of the above answers is correct.
in Data Science by Diamond (67,400 points) | 8,718 views

5 Answers

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Best answer
The standard deviation is 8. The square root of 64.
by Wooden (476 points)
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The standard deviation of the sample equals to 8

c. 8
by Wooden (1,276 points)
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The std dev is 8. Std dev is the square root of the variance.
by Wooden (350 points)
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The answer is 8, because sqr of 64=8
by Wooden (388 points)
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standard deviation of the sample is 8
by Wooden (424 points)

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