PSYC 305 Lecture Notes - Lecture 16: Statistical Parameter, Linear Regression, Statistic

• School: McGill University
• Department: Psychology
• Course: PSYC 305
• Professor: Heungsun Hwang

Document Summary

First, the last bits of the last lecture: All these groups come from the same population. 3 steps for doing post-hoc for kruskal-wallis, as shown on slides. Use wilcoxon rank sum test for each possible pair. Recall, w is the rank sum of the smaller group. C vs. hj is . 002 which is smaller than /k. This post-hoc test is just fyi; don"t need to apply even if you have significant results for kruskal-wallis h test! Direction: positive means two variables moving in same direction; negative, moving in opposite directions. Y-value remains the same no matter what happens to x. By applying pearson correlation coefficient (r ), we already made two assumptions: There"s linearity b/w the two variables (linear relationship) We extract mean from x and y b/c we want to see how these two variables are moving together; also their central tendency.