openintro (version 1.3)

gradesTV: Simulated data for analyzing the relationship between watching TV and grades

Description

This is a simulated data set to be used to estimate the relationship between number of hours per week students watch TV and the grade they got in a statistics class.

Usage

data(gradesTV)

source

Simulated data

Details

There are a few potential outliers in this data set. When analyzing the data one should consider how (if at all) these outliers may affect the estimates of correlation coefficient and regression parameters.

Examples

data(gradesTV)
str(gradesTV)

plot(gradesTV)
makeTube(gradesTV$TV, gradesTV$Grades, 1.5, type='robust', homosk=FALSE)

lmPlot(gradesTV$TV, gradesTV$Grades, xAxis=4, xlab='time watching TV',
	yR=0.2, highlight=c(1,15,20))