upper means 18 years and older in world of dance.
what does upper mean in world of dance?
18 years and older
Na
Na
if an observed difference is greater than the corresponding shortest significant range, then we conclude that the pair of means in question is significantly different.





























if an observed difference is smaller than the corresponding shortest significant range, all differences sharing the same upper mean are considered insignificant, in order to prevent contradictions (differences sharing the same upper mean are shorter by construction).





























for our case, the comparison will yield:





























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duncan's new multiple range test