I am intending to be condescending towards art majors mainly due to the fact that their schedules are in fact much easier grade wise than someone in the science fields . Which , again , proves my point that you just agreed to that the GPA of 4 . 0 for an art major is irrelevant . GPA doesn ' t make you smart necessarily unless your major is heavily dependent on actual grades . <| sep |> Let ' s kill two thing first . 1 His prediction does not provide strong evidence for his assumption of a bot . If the rate remains close to his average after 28 hours that would be reasonable even given the high variance provided by a seasonal trend that sees more donated at some time than others . 2 Donation rate won ' t be affected by one or two adverse periods . Seasonality shifts things around . It ' ll hurt variance but the analysis is quite robust to higher variance . If the user makes the claim Between 5 AM and 6 AM there were a higher number of donations then I ' d expect . then he ' d need more data points for that belief . What ought the true mean to be ? You ' d need to model am arrival process . Also heshe ought to provide some evidence of this claim . Perhaps hourly figures and some evidence that these are correct hourly fgures . See 2 for why he might have used a much weaker method to capture this deviation then he believed . If you ' re just taking the total and dividing by the time elapsed you ' re providing yourself with little evidence of a lack of a seasonal trend . The trend contributes too little to shift the rate .