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Results tagged with variance
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user 10468
The expected squared deviation of a random variable from its mean; or, the average squared deviation of data about their mean.
11
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4
answers
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Variance of resistors in parallel
The variance of each section would then be $σ^2$, $2σ^2$, $3σ^2$.
What is the variance in the resistance of the entire circuit? … Edit: Resistance values are assumed to be normally distributed with some mean resistance r and variance $σ^2$. …
- 235
2
votes
1
answer
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Variance of X/Y
Suppose you have two normally distributed, independent random varianbles X and Y, where X has mean $\mu _x$ and variance $\sigma^2 _x$ and Y has mean $\mu _y$ and variance $\sigma^2 _y$. … The question is: what is the approximate variance of this distribution?
Below is the sampling histogram: …
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