Linear regression for total beginners

Why bother to fit a straight line to a data set? I'll give you three good reasons :-) This is intended as a introduction to linear regression for beginners -- focusing on the why of linear regression, as well as the execution in R, rather than the technical details. Data and code here: https://bookdown.org/jgscott/DSGI/basic_regression.htmlhttps://bookdown.org/jgscott/DSGI/basic_regression.html New to R? New to stats? Start here! https://bookdown.org/jgscott/DSGI/getting-started-in-r.html 00:00 Introduction 00:33 A running example 03:11 Visualizing a regression model 05:05 What is linear regression good for? 05:37 Summarizing a trend 09:25 Predicting 11:40 Fitting in R 15:57 Making fair comparisons