BIOL 300 Study Guide - Final Guide: Slow-Wave Sleep, Dependent And Independent Variables, Analysis Of Variance
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The two individuals in a pair share many things in common with each other but differ from members of other pairs. Whatever variation these shared differences causes in the response variable is factored out in the difference between them. By looking at the differences, we potentially avoid much of the error variance in the data. Separate samples do not share these properties: what are the non-parametric alternatives to. Spearman"s rank correlation: scorpionfly males were raised on either a high nutrient (nh) or low nutrient (nl) food, to test the prediction that bad conditions causes more developmental problems (as measured by asymmetric development). Their wings were then measured on both sides, and the absolute value of the difference between the left wing length and the right wing length was used as a measure of their asymmetry (xi). Do the appropriate test of the hypothesis, making the necessary assumptions.
