Tukey´s HSD (Honestly Significant Differences) Test:
This test is used for testing the significance of unplanned pairwise comparisons. When you do multiple significance tests, the chance of finding a “significant” difference just by chance increases. Tukey´s HSD test is one of several methods of ensuring that the chance of finding a significant difference in any comparison (under a null model) is maintained at the alpha level of the test. In other words, it preserves “family-wise type I error.”
Planning on taking an introductory statistics course, but not sure if you need to start at the beginning? Review the course description for each of our introductory statistics courses and estimate which best matches your level, then take the self test for that course. If you get all or almost all the questions correct, move on and take the next test.
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