POL345Y1 Study Guide - Coefficient Of Determination, Summary Statistics, Comparator
Document Summary
Regression analysis is a bunch of summary statistics telling us the relationship between an iv and dv. They are summary because they tell us lots of direction: they tell us the direction, how closely the variables are linked. We can fill in the numbers of the values into the formula and we will get an idea of the direction the line is going in. Multiple regressions: other features: how substantial a role do ivs have, two methods of evaluation: for evaluating the strength of the relationship of the variables, r-squared, beta. Best guess . mean: compares error from dv mean with error from regression line, range is 0-1: if iv provides not contribution to understanding dv, closer to o, if iv completely explains dv approaching 1. We can an r square of 1, the prediction id perfect. We want to explain the variations in responses to international news.
