OpenBSD’s Guide to Netiquette

The OpenBSD's mailing list page netiquette section is excellent. It is a distillation of how to communicate online, i.e.: Plain text, 72 characters per line [or simplest formatting available]Do your homework before writingInclude a useful subject line [or headline]Trim your signatureStay on topicInclude important informationRespect differences in opinion and philosophy Using only plain text is … Continue reading OpenBSD’s Guide to Netiquette

Simpson’s Paradox

"Simpson's paradox (or Simpson's reversal, Yule–Simpson effect, amalgamation paradox, or reversal paradox), is a phenomenon in probability and statistics, in which a trend appears in several different groups of data but disappears or reverses when these groups are combined. —s.v. Simpson's Paradox, Wikipedia. An example using arithmetic from the Stanford Encyclopedia of Philosophy: 1/5 < … Continue reading Simpson’s Paradox