squared difference
51McNemar's test — In statistics, McNemar s test is a non parametric method used on nominal data. It is applied to 2 × 2 contingency tables with a dichotomous trait, with matched pairs of subjects, to determine whether the row and column marginal… …
52Greek arithmetic, geometry and harmonics: Thales to Plato — Ian Mueller INTRODUCTION: PROCLUS’ HISTORY OF GEOMETRY In a famous passage in Book VII of the Republic starting at Socrates proposes to inquire about the studies (mathēmata) needed to train the young people who will become leaders of the ideal… …
53Chess endgame — In chess and chess like games, the endgame (or end game or ending) is the stage of the game when there are few pieces left on the board. The line between middlegame and endgame is often not clear, and may occur gradually or with the quick… …
54Rate–distortion theory — is a major branch of information theory which provides the theoretical foundations for lossy data compression; it addresses the problem of determining the minimal amount of entropy (or information) R that should be communicated over a channel, so …
55Geodetic system — For other uses, see Geodetic. Geodesy Fundamentals …
56Wald test — The Wald test is a statistical test, typically used to test whether an effect exists or not. In other words, it tests whether an independent variable has a statistically significant relationship with a dependent variable. Suppose an economist,… …
57Corner detection — Feature detection Output of a typical corner detection algorithm …
58Butanol fuel — Butanol may be used as a fuel in an internal combustion engine. Because its longer hydrocarbon chain causes it to be fairly non polar, it is more similar to gasoline than is ethanol. Butanol has been demonstrated to work in some vehicles designed …
59History of quaternions — This article is an indepth story of the history of quaternions. It tells the story of who and when. To find out what quaternions are see quaternions and to learn about historical quaternion notation of the 19th century see classical quaternions… …
60Seismic Unix — is an open source seismic utilities package supported by the Center for Wave Phenomena (CWP) at the Colorado School of Mines (CSM).Infobox Software name = Seismic Unix caption = Velocity Analysis with SU developer = [http://www.cwp.mines.edu/… …
