Category Archives: statistics

Probabilities of probabilities

In simple games, one can calculate the exact probability of every outcome, and so the expected winnings can also be determined exactly…. When I wrote the words above in a recent American Scientist column, I didn’t think I was saying … Continue reading

Posted in mathematics, statistics | 6 Comments

The ormat game

Here’s the deal. I’m going to give you a square grid, with some of the cells colored and others possibly left blank. We’ll call this a template. Perhaps the grid will be one of these 3×3 templates: You have a … Continue reading

Posted in computing, games, mathematics, physics, statistics | 2 Comments

Four questions about fuzzy rankings

The National Research Council is getting ready to release a new assessment of graduate-education programs in the U.S. The previous study, published in 1995, gave each Ph.D.-granting department a numerical score between 0 and 5, then listed all the programs … Continue reading

Posted in computing, games, mathematics, problems and puzzles, statistics | 22 Comments

The thrill of the chase

How I love to go out hunting on a bright Sunday morning—though it’s not my style to shoot furry/feathery/finny animals. My game is to get up early and stalk a wily factoid. A posting from Mat Roberts, whose blog I’ve recently … Continue reading

Posted in statistics | 12 Comments

Fake fits

A few weeks ago I committed an act of deception. I needed a graph showing a few sets of data points, with curves fitted to them. This was strictly for show; neither the points nor the curves would mean anything; … Continue reading

Posted in mathematics, statistics | 6 Comments