ANOVA using Minitab

  • This situation where there are the same number of subjects in all
    cells is called a balanced design.
  • If the interaction p-value is not statistically signicant, then in most situations most analysts would re-run the ANOVA without the interaction, i.e., as a main effects only, additive model. The interpretation of main effects F-statistics in a non-interaction two-way ANOVA is easy.
Example of TWO-Way ANOVA without Replicates ( balanced ) https://www.stat.cmu.edu/~hseltman/309/Book/chapter11.pdf