what is meant by the differenced series in a differenced series in terms of mean differentd series meaning how to interpret a differenced series differenced series with non null mean how to interpret differenced series what is meant by differenced series with a non zero mean? if a pair of series has a non zero difference, how is that interpreted differenced series with non zero how do you interpret a differenced series what means differenced series what is meant by the term differenced series what is the difference between the stationary series and the differenced series differenced series how does the mean of the difference relate to the mean? how do we interpret differenced series with a non zero mean how to interpret differenced series how to explain a series of differenced how to interpret differenced series what is the difference between a stationary series and a stationary differenced series? what does difference mean on a differenced set how to interpret difference series