Free reference · 596 entries
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Short, plain definitions of the terms that turn up in statistics and data science — what they mean, and how they relate to each other. Nothing to sign in for.
18 of 596 entries under G
- Gamma DistributionA random variable x is said to have a gamma-distribution with parameters a > 0 and l > 0 if its probability density p(x) is G(a) la xa–1 e–lx, x > 0; 0,
- Gamma Distribution (Graphical)A random variable x is said to have a gamma-distribution with parameters a > 0 and l > 0 if its probability density p(x) is G(a) la xa–1 e–lx, x > 0; 0,
- Gaussian DistributionSee Normal Distribution.
- Gaussian FilterThe Gaussian filter is a linear filter that is usually used as a smoother. The output of the gaussian filter at the moment is the weighted mean of the input values, and the weights are defined by formula…
- General Association StatisticThe general association statistic is one of the statistics used in the generalized Cochran-Mantel-Haenszel tests.
- General Linear ModelGeneral (or generalized) linear models (GLM), in contrast to linear models, allow you to describe both additive and non-additive relationship between a dependent variable and N independent variables.
- General Linear Model for a Latin SquareIn design of experiment, a Latin square is a three-factor experiment in which for each pair of factors in any combination of factor values occurs only once.
- General Linear Model for a Latin Square (Graphical)In design of experiment, a Latin square is a three-factor experiment in which for each pair of factors in any combination of factor values occurs only once.
- Generalized Cochran-Mantel-Haenszel testsThe Generalized Cochran-Mantel-Haenszel test is a family of tests aimed at detecting of association between two categorical variables observed in K strata.
- Geometric DistributionA random variable x obeys the geometric distribution with parameter p (0<p<1) if P{x=k} = p(1–p)k, k=0,1,2, … .
- Geometric Distribution (Graphical)A random variable x obeys the geometric distribution with parameter p (0<p<1) if If a random variable obeys the Bernoulli distribution with probability of success p, then x might be the number of trials…
- Geometric meanThe geometric mean of n values is determined by multiplying all n values together, then taking the nth root of the product.
- Geometric Mean and Mean (comparison)The quantitative distinction between the geometric mean and the mean can be illustrated by the following table: Data set Mean Geometric Mean 1, 1, 1 1 1 1, 2, 3 2 1.6 1, 2, 1000 334 6.7 The analytical…
- Gini coefficientThe Gini coefficient is used in economics to measure income inequality. Generally speaking, it is used to measure the extent of departure from a perfectly even distribution of income.
- Gini coefficient (Graphical)The Gini coefficient is used in economics to measure income inequality. Generally speaking, it is used to measure the extent of departure from a perfectly even distribution of income.
- Gini’s Mean DifferenceN(N–1) GMD = 1 ? ij |xi–xj|; i,j = 1,…,N; i ? j .
- Goodness – of – Fit TestIt is a statistical test to determine whether there is significant difference between the observed frequency distribution and a theoretical probability distribution which is hypothesized to describe the…
- Granger CausationGranger causation is a definition of causal relation between vectors in vector time series.
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