why is covariance a variable how to find the covariance in a taylor series what is the coefficient for variance on the variance of z what is the variance of exp(z)$? what is a normal random variable what is the coefficient of covariance of exp(z) what is a normal random variable what is the variance of an exponential random variable when exponentiating a random variable what is the variance what is the variance of the variable for a normal polynomial calculating covariance of an experiment what is the variance of y in the value exp(z)$ what is the random variable variance in math? when exponentiating a random variable what is the variance when exponentiating a normal variable, what is the variance of variable y what is the variable variance of exp(z)$ what is the variance in a regular variable how to find coefficients of randomness what is random variable covariance? what is variance on a normal sample variable