Mathematics Archives

Can’t be disparted from Computer Science

  1. Why divide by n-1 and not n?

    “Some questions are more easily asked than answered” Edward Sapir(?) Possibly the most frequently asked and least frequently answered question is why does the definition of the standard deviation involve division by n-1, when n might seem the obvious choice. This is a question which perplexes introductory statistics students and calculator manufacturers alike. The explanations Continue reading...