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Results tagged with standard-deviation
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user 2848
Standard deviation is the square root of the variance of a random variable, an estimator thereof, or a similar measure of the spread of a batch of data.
8
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1
answer
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Reliability of mean of standard deviations
I've a question which probably is going to show my ignorance about statistics :). I have a large set of machines that produce iron bars of certain lengths. For each machine, I have ran experiments and …
- 267
2
votes
1
answer
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Bound on variance of sum of variables
Suppose I have two finite sets of data A and B, with equal length n.
What's the best upper and lower bound I can make on var(A+B), in terms of var(A) and var(B)?
- 267