how to find the variance between the y and y if y is the expected number of items sold in the market per day in the traditional shop, then what does e(x) mean how to find the marginal distribution what is the marginal distribution for the internet calculate the difference of x,y and y in probability how do you find the marginal distribution of x how to calculate the marginal distribution in the xy what is the distribution p in probability what is the joint distribution for x in y what is the marginal distribution in retail how to estimate the marginal distribution of the average sale how does the marginal distribution work? average price of items sold per day what is x and y? what is the marginal distribution of a retail store called the corresponding variance of the expected number of items sold per day is described by the probability function what is the marginal distribution of an average item how does a normal distribution of x and y differ from the marginal distribution? find the covariance between x and y what's the difference between the marginal distribution x,y