https://communities.sas.com/t5/Statistical-Procedures/Homogeneity-of-Variances-in-a-series-of-experiments/m-p/31375#M1284 I would like to combine data from a series ( 7 seasons) of experiments that have a split plot design with nitrogen fertilization as main plot and genotypes as subplots. Therefore I have to check homogeneity of variances for error A and error B. I have preformed the individual anovas model 1 fixed effects, for each experiment and used Bartlett´s test. But I would like to use Levene´s test being this test less sensible to departures from normality. <BR /> How can I do a Levene´s test for k-way (more than 1)Anova.??? what statements in Proc glm would I have to write????<BR /> Thanks in advance<BR /> Eugenia Wed, 16 Dec 2009 19:51:26 GMT deleted_user 2009-12-16T19:51:26Z https://communities.sas.com/t5/Statistical-Procedures/Homogeneity-of-Variances-in-a-series-of-experiments/m-p/31375#M1284 I would like to combine data from a series ( 7 seasons) of experiments that have a split plot design with nitrogen fertilization as main plot and genotypes as subplots. Therefore I have to check homogeneity of variances for error A and error B. I have preformed the individual anovas model 1 fixed effects, for each experiment and used Bartlett´s test. But I would like to use Levene´s test being this test less sensible to departures from normality. <BR /> How can I do a Levene´s test for k-way (more than 1)Anova.??? what statements in Proc glm would I have to write????<BR /> Thanks in advance<BR /> Eugenia Wed, 16 Dec 2009 19:51:26 GMT https://communities.sas.com/t5/Statistical-Procedures/Homogeneity-of-Variances-in-a-series-of-experiments/m-p/31375#M1284 deleted_user 2009-12-16T19:51:26Z