SOLUTION: In the formula for variance of values in a sample ∑(x-xbar)^2/n-1, what is required for the variance to equal zero? The Empirical Rule indicates that we can expect to fi

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Question 1008287: In the formula for variance of values in a sample ∑(x-xbar)^2/n-1, what is required for the variance to equal zero?

The Empirical Rule indicates that we can expect to find what proportion of the sample included within + or - 2 sd?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
In the formula for variance of values in a sample ∑(x-xbar)^2/n-1, what is required for the variance to equal zero?
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Every value of x is the same, so x = xbar
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The Empirical Rule indicates that we can expect to find what proportion of the sample included within + or - 2 s
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Ans:: 68% of the data
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Cheers,
Stan H.
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