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Discussions

Solve problems, and share tips and tricks with other JMP users.
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RonnieOmics
Level I

How to analyze a 4x4 Latin square design?

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.

 

Latin Square.png

4 REPLIES 4

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

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

 

  1. Select Analyze > Fit Model
  2. Select Yield and click Y.
  3. Select Row, Column, and Varieties, and click Add.
  4. 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.

eclaassen
Staff

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

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.

RonnieOmics
Level I

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

Basically just like factorial design but no interaction terms?

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

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

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