Hi Rick, This would be my code for the ANOVA model ( 5 samples, 177 Entries and 2 blocks). proc mixed data=one covtest cl; class Sample Entry Block; model Measure = Sample Entry Sample*Entry/ddfm=kenwardroger; random Block; run; Please ignore this sentence 'In my experiment, dependent or independent variables are not defined'.Measure is the dependent variable in the model statement. Before performing ANOVA, I checked the normality for the residuals in individual samples. Please check some of the results of the residual analysis in my reply to PG. Any advice is much appreciated. Thanks
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