heterogeneity of variance

the situation in which the variance of a random variable is different at each level or value of another variable. Var(y|x) is not the same for all values of x; that is, the variance in y is a function of the variable x. Heterogeneity of variance violates one of the basic assumptions of regression analysis and other statistical procedures. Also called heteroscedasticity. Compare homogeneity of variance.

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Psychology term of the day

November 22nd 2024

Reiz limen (RL)

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