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Politics : Formerly About Advanced Micro Devices

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To: tejek who wrote (245629)	8/10/2005 6:15:48 PM
From: combjelly	Read Replies (1) of 1575981

"Have you heard of the Tests for Homogeneity?" Yeah. There are several different approaches, depending on the charactistics of the data. Finding a good, general definition seems to be tough. This was the best I could find. Sorry I couldn't be of help. HOMOGENEITY OF VARIANCE. A situation in which the variance on a dependent variable is the same (homogeneous) across all levels of the independent variables. In analysis of variance applications, several statistics are available for testing the homogeneity assumption (see Kirk, 1968, page 61); in regression applications, a lack of homogeneity can be detected by examination of residuals (see Draper and Smith, 1966, page 86). In either case, a variance-stabilizing transformation may be helpful (see Kruskal, 1978, page 1052). Synonym: homoscedasticity. Antonym: heteroscedasticity. socialresearchmethods.net

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