In statistics, the mean squared error (MSE) or mean squared deviation (MSD) of an estimator (of a procedure for estimating an unobserved quantity) measures...

statistic is chi-squared distributed under the null hypothesis, specifically Pearson's chi-squared test and variants thereof. Pearson's chi-squared test is used...

pronounced "R squared", is the proportion of the variation in the dependent variable that is predictable from the independent variable(s). It is a statistic...

called the central chi-squared distribution, a special case of the more general noncentral chi-squared distribution. The chi-squared distribution is used...

A Google Account is a user account that is required for access, authentication and authorization to certain online Google services. It is also often used...

Hōjōki (方丈記, literally "square-jō record"), variously translated as An Account of My Hut or The Ten Foot Square Hut, is an important and popular short...

Pearson's chi-squared test or Pearson's χ 2 {\displaystyle \chi ^{2}} test is a statistical test applied to sets of categorical data to evaluate how likely...

\chi _{\nu }^{2}={\frac {\chi ^{2}}{\nu }},} where the chi-squared is a weighted sum of squared deviations: χ 2 = ∑ i ( O i − C i ) 2 σ i 2 {\displaystyle...

Root mean square Squared deviations from the mean Charnes, A.; Frome, E. L.; Yu, P. L. (1976). "The Equivalence of Generalized Least Squares and Maximum...

As part of the phasing out of Google Labs, Google Squared was shut down on September 5, 2011. Squared was developed at Google's New York office. It was...