Probability

• Some reflexions on a paradox about two boxes, which turns out to be a form of the well-known two-envelope paradox.
• The question of whether to divide by n or n-1 when finding the variance and standard deviation, discussed at some length (with other options, like n-3.5, that you might not want to consider).

Old Sky Blue Articles

Sky Blue is CUSAGC's termly magazine, to which I contributed various pieces over the years. Some of them were in verse, and are included here. Others include an exam rubric, a lesson plan, and some speculation on how the Conservators of the Cam have come up with their figure for the carrying capacity of a punt.