Latin squares

Experimental Design in R

Joanne Xiong

Data Scientist

Latin squares

• Two blocking factors (instead of one)
• All factors must have the same number of levels
• Key assumption: the treatment and two blocking factors do not interact
• Analyze like a RCBD

Latin square diagram

Why is it a Latin square?

Intro to NYC scores

• nyc_scores is an NYC open dataset
  • Downloaded from Kaggle
• Includes:
  • All accredited NYC high schools
  • SAT scores (Reading, Writing, and Math)
  • 2014-2015 school year

Let's practice!

Experimental Design in R