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heteroscedastic

adjective statistics
  1. (of several distributions) having different variances
  2. (of a bivariate or multivariate distribution) not having any variable whose variance is the same for all values of the other or others
  3. (of a random variable) having different variances for different values of the others in a multivariate distribution
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Derived Formsheteroscedasticity (ˌhɛtərəʊskɪdæsˈtɪsɪtɪ), noun

Word Origin

C20: from hetero- + scedastic, from Greek skedasis a scattering, dispersal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012