Regression

The purpose of this post is to give an example of how to visualize a quadratic linear regression and also how to find the values of the predictor variable which give you the min and max fitted values of your dependent variable. Given the curvilinear relationship between the independent and and dependent variable, it is not always obvious which values of the independent variable will produce the highest and lowest predicted values in the dependent variable.

R Markdown This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com. You can embed an R code chunk like this: summary(cars) ## speed dist ## Min. : 4.0 Min. : 2.00 ## 1st Qu.:12.0 1st Qu.: 26.00 ## Median :15.0 Median : 36.00 ## Mean :15.4 Mean : 42.98 ## 3rd Qu.