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Duncanâ??s multiple range test is a test used in statistical analysis. It is a result-guided test which controls comparison-wise error rates in a formula while comparing the treatment means. The Duncan methodâ??s operating characteristics appear to be comparable to Fisherâ??s method with unprotected LSD, but as repeated t tests are simpler to compute, applicable to sample sizes that are unequal and are easier to elaborate on and explain, Duncanâ??s method isnâ??t recommended in those incidents. Use Duncanâ??s multiple range test only for planned comparisons.

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