Statistical modelling/Numbers of cattleIn order to test whether the homesteads, for which livestock provides the major source of income, possess more cattle on average than those for which livestock does not, a linear mixed model (REML), with sub-region and dip-tank area within sub-region assumed to be random effects and primary source of income as a fixed effect, was fitted to the transformed cattle numbers in CS11Data1. To perform the analysis, the relevant GenStat input is entered in the dialog box obtained by clicking Stats → Mixed Models (REML) → Linear Mixed Models and putting the variable livst_inc2 in the Fixed model: window and subregion/diptank in the Random model: window. There is a significant difference (P<0.05) between the two groups of homesteads.
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