Is it possible to analyze the following experiment in JMP? If so, how?
Experimental questions: 1) Did any treatments decrease plant disease severity or death compared to the untreated control? 2) Did any treatments delay disease onset compared to the untreated control?
-Tested 4 treatments on a plant pathogen against an untreated control
-Experimental design: 5x5 Latin square
-Assigned a disease severity score of 0, 1, 2, 3, or 4 (with 0 having no disease symptoms and 4 being dead; only integers were given)
-Disease severity was scored every 7 days throughout the experiment.
Unless I'm mistaken, rows and columns should be assigned as random variables for this analysis (to account for soil nutrient variation). Still, I need help finding a Personality that supports random variables when using ordinal scoring data. Also, can the treatments be compared to the untreated control in a Latin square design? Any recommendations?