heteroscedasticity


het·er·o·sced·as·tic·i·ty

(het'ĕr-ō-skĕd'as-tis'ĭ-tē), Nonconstancy of the variance of a measure over the levels of the factor under study. [hetero + G. skedastikos, pertaining to scattering, fr. skedannumi, to scatter]