How can I do the test Tukey par Excel or SPSS and determine the lettres a, b and c ?

25 June 2024 1 5K Report

I need the exact method to determine the letters a, b, and c noted in the exponent of the standard deviation value of color, for example, like in the picture added. The letters are marked with yellow.

Vladimir Siplivy

Hello!

This looks like the CLD method (https://en.wikipedia.org/wiki/Compact_letter_display). This can be done manually by performing pairwise comparisons. I've only done this in R.

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