Bag count is a Poisson process, besides bag counts are correlated, one day’s bag count influence another day’s, for instance weekend bag counts would correlate as would bag counts during holidays. Did you use some form of adjustments for that? A linear regression is not likely to give you whatever answers you were looking for.

Associate Professor of Epidemiology and Environmental Health at the University of Canterbury, New Zealand. Also in: https://refind.com/arinbasu

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