Create single- and multiple-variable linear regression models

- [Instructor] Linear regression, which finds the line that best fits a data set is one of the most useful forms of data analysis you can perform. In this movie, I will show you how to perform linear regression, using one or more input variables in R. I have run R in the console and now I can assign data from an external file to a variable and then create a linear regression model. I'll start by having our data one as the variable that will hold my data table or data frame. And then I will assign using a less than sign and a hyphen value from the method read table. And then in parentheses, I need to give the full file path on my system to the file I want to use. So I'll press alt tab to move to the chapter three file of the exercise files archive. And the file that I want to use is sales data dot CSV, so I'll right click that and then click copy as path. I could also press control shift C. So I'll click there, and then…