Hi everyone I have a question about showing significant difference between treatments in a table using letters. I have 5 total treatments (two control and 3treatments)

Based on anova results (and post hoc tests) the control and treatment 3 don’t have any significant difference, but all the other treatments are significantly different from each other and the control. I want to present the data in a table and I’ve seen small letters are used to indicate the significant difference, but I don’t exactly know how to use them.

I really appreciate it if anyone can help me.

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