what does the sum deviations from the mean of a variable equal when is a regression value less than the sum of deviations what is the sum of deviations from mean? x y y does not equal to what? what is the sum of deviations from the mean what is the difference between y and the sum of squared deviations of a variable from the mean for regression what is the y from the mean in a regression what is the sum of deviations from mean is the sum of deviations from the mean what does the sum of deviations of a variable from its mean mean mean? how much does the squared deviation mean in a regression trig a squared variance definition which is equal to the sum of deviations when a variable's mean and its variance does it equal to zero what does the sum deviations from the mean of a variable mean? how do you say the sum of deviations from the mean of a variable is zero does the sum of deviations from the mean of the variable equal anything special? what is the difference between mean and sum deviations in regression is the sum of deviations from a mean squared is the sum of deviations from the mean the same as?