12KiB, 384x248, hist.png View SameGoogleiqdbSauceNAO Anonymous Tue 28 Jul 21:09:12 2020 No.11947489 ViewReplyOriginalReport Quoted By: >>11947496 I have a histogram that contains zeros, how can I calculate $$ \mu_1(t) = \sum_{i=1}^t \frac{i P(i)}{q_1(t)} $$ without having division by zero?