Covariance of two independent random variables isnt it zero?
68137
Independence and conditional independence between random variables
14063
Is a non-negative random variable with zero mean almost surely zero?
123573
Is a sample covariance matrix always symmetric and positive definite?
138325
Equivalence of two formulas for variance and covariance
59106
Components of an n-dimensional random variable from a uniform distribution are independent
58206
Poisson Distribution of sum of two random independent variables $X$, $Y$
84662
Question on the correlation between two dependent variables
20875
Is the product of two Gaussian random variables also a Gaussian?
116975
Given $X$ and $Y$ are independent N(0,1) random variables and $Z = \sqrt{X^2+Y^2}$ from the marginal pdf of $Z$
156092
Existence of independent and identically distributed random variables.
146130
Conditional expectation of two identical marginal normal random variables
153393
Is there a *simple* example showing that uncorrelated random variables need not be independent?
37856
Covariance between sum of iid random variables and sum of indicator functions
31133
Functions of Independent Random Variables
144538
Sanity check question about correlation between log-normal random variables
108690
The weighted sum of two independent Poisson random variables
57451
Independent variable = Random variable?