topic Re: How to analyze a 4x4 Latin square design? in Discussions

How to analyze a 4x4 Latin square design?

RonnieOmics — Sat, 10 Jun 2023 23:43:09 GMT

Hello. I am new to JMP. I am still figuring out how to do Latin square designs here. I cannot find any intuitive tutorials here or even in youtube. Here is my sample data ( I got this from Latin square design in R tutorial in Google):

My treatment of interest is the varieties and row and column are your blocking variables.

Re: How to analyze a 4x4 Latin square design?

Mark_Bailey — Mon, 24 Jan 2022 15:50:26 GMT

First, make sure that the Row and Columns use the Nominal modeling type. Second, follow these steps:

Select Analyze > Fit Model
Select Yield and click Y.
Select Row, Column, and Varieties, and click Add.
Click Run.

The Latin square design that you used is simply a one-factor design for four levels, with two blocking variables, each at four levels. This analysis should be correct.

Re: How to analyze a 4x4 Latin square design?

eclaassen — Mon, 24 Jan 2022 16:31:32 GMT

Small, optional but recommended addendum to the above instructions:

3.5 Change the Attribute of Row and Column to Random, as blocking factors should typically be treated as random effects, not fixed, for improved inferential properties.

Re: How to analyze a 4x4 Latin square design?

RonnieOmics — Sat, 29 Jan 2022 16:53:17 GMT

Basically just like factorial design but no interaction terms?

Re: How to analyze a 4x4 Latin square design?

Mark_Bailey — Mon, 31 Jan 2022 15:39:55 GMT

There is only one factor, so there are no interaction effects.