why do you calculate the distribution function? why is density estimation necessary estimate a distribution function why do you estimate distributions when the distribution of a random variable is known, what should i consider can density estimation be used only mean and variance what is density estimation when to estimate distributions density estimation is performed with only mean and variance. what is the density of random variable what is the estimated distribution of a variable how to estimate distribution of randomly generated variables density estimation using mean and variance how estimate distribution of random variable density estimation in statistics and probability density estimation when only the mean and variance are known why do i need to find the distribution function why is it difficult to estimate the distribution of a random variable in density which of the following is an example of an approximate distribution density estimation when only variance is known is