IMM250H1 Lecture 10: lecture notes - class 10 - 2016
Document Summary
Chi square is used to compare 3 or more proportions (like anova but anova was for means). Anova helps make a judgement about how well one variable helps explain another variable which is the strength of association. How much does being in a certain category tell us about a variable(?). tbt eta squared from anova. Today we"ll talk about association bet categorical variables and want to describe nature and strength of bivariate associations and if is there a sig association to begin with. Associations between variables are what we use to answer empirical question about how the world works which is the ultimate point of stats. Association: the distribution of one variable differs depending on the value of another variable. Require two variables at least (we use bivariate), below is another way to put that. Knowing variation in the independent variable helps us predict variation in the dependent variable.
