New posts in variance

Probability of exceeding a value with a given expectation and variance?

probability statistics random-variables expected-value variance

Is the variance concave?

probability convex-analysis variance

Calculation of the correlation coefficient of these quantities $S = 3X + 3Y + 2Z + U + V + W$ and $T = 9X + 3Y + 2Z + 2U + V + W$ [closed]

probability expected-value variance covariance correlation

Why does $ \operatorname{Var}(X) = E[X^2] - (E[X])^2 $

probability statistics variance

Weak Convergence of centered and scaled sum to a non-degenerate limit implies existence of the second moments of the sequence

probability-theory variance central-limit-theorem

Sample variance: degree of freedom argument

sampling variance

What is the variance of this unbiased estimator for a normal distribution?

probability statistics variance estimator

Can random variable $X$ take $2$ (or more values) in this situation?

probability-theory random-variables variance

Does I<D> re-implement I<B> if I<D> is convertible to I<B> by variance conversion?

c# c#-4.0 covariance contravariance variance

Calculating the Expectation and Variance of having pairs after selecting N people

probability probability-distributions expected-value variance

Expected Value Gambling Qn

probability statistics expected-value variance law-of-large-numbers

Why square a constant when determining variance of a random variable?

probability means constants variance

How do we calculate the expected value of $Y$?

probability probability-theory random-variables expected-value variance

Calculating the independence sum of variance

statistics expected-value variance

Show that $E^2(XY) \leq E(X^2)E(Y^2)$.

probability statistics expected-value variance covariance

Calculation of correlation with knowledge of expected values and variances

statistics variance covariance correlation

Random variable defined on the IID taken from cauchy distribution

probability statistics expected-value variance sampling

Variance of fair die roll - two in a row

probability discrete-mathematics variance

Find the expectation and standard deviation of the combined mass of rock samples collected

probability expected-value variance

Chebyshev's inequality to find minimum

probability probability-distributions random-variables expected-value variance