Mean, median, mode and range worksheets

Every set here has an even number of values, so the median falls between two of them and has to be averaged rather than pointed at. That is the case a five-number set cannot teach and the one an exam always asks, and it is also where a generated worksheet usually prints a confident wrong answer.

Each set has exactly one mode. A set with two most-common values has two right answers, and a key that named one of them would mark a correct child wrong — so the numbers on this page are drawn until there is a single answer to give.

The answers were worked out when the problems were, so the key is the same page with the answers drawn in rather than a second attempt at the same questions — there is no way for the two to disagree. The number in the footer is the seed the sheet was built from: it is printed so that the identical sheet can be had again next week, rather than one that merely looks like it.

This page is one sheet out of a family that can print thousands, and the settings behind it — how many problems, how big the numbers get, how they are laid out, whether there is room to work — are all switches. The builder link at the top of the page carries this sheet’s own settings, so the bench opens on exactly the sheet here rather than on a blank one.

The configuration travels in the address bar rather than on a server, so the link can be bookmarked or sent to somebody as it stands — and what they open is this sheet, down to the seed, rather than another one like it.

Not in the games. The adding and dividing inside every mean is, in The Grid.