A well-known problem in numerical ecology is how to recombine presence-absence matrices without altering row and column totals. A few solutions have been proposed, but all of them present some issues ...

The inspiration for this column comes not from the epic 1999 film The Matrix, as the title may suggest, but from an episode of Sean Carroll’s Mindscape podcast that I listened to over the summer. The ...

You can use Microsoft Excel to set up a simple row-and-column matrix of information, listing income data, itemizing expenses and documenting events. These tasks barely scratch the surface of Excel's ...