data.frame

A tutorial on the prediction interval for a multiple linear regression model.

A tutorial on the confidence interval for a multiple linear regression model.

A tutorial on the prediction interval for a simple linear regression model.

A tutorial on the confidence interval for a simple linear regression model.

A tutorial on estimated regression equation for a simple linear regression model.

A tutorial on the concept of data frames in R. Using a build-in data set sample as example, discuss the topics of data frame columns and rows. Explain how to retrieve a data frame cell value with the square bracket operator. Plus a tips on how to take preview of a data frame.