BushApproval {UsingR} | R Documentation |
Approval ratings as reported by six different polls.
data(BushApproval)
A data frame with 323 observations on the following 3 variables.
fox
gallup
newsweek
time.cnn
upenn
zogby
A data set of approval ratings of George Bush over the time of his presidency, as reported by several agencies. Most polls were of size approximately 1,000 so the margin of error is about 3 percentage points.
This is from data found at http://www.pollingreport.com/BushJob.htm. The idea came from an article in Salon http://salon.com/opinion/feature/2004/02/09/bush_approval/index.html by James K. Galbraith.
data(BushApproval) attach(BushApproval) ## Plot data with confidence intervals. Each poll gets different line type ## no points at first plot(strptime(date,"%m/%d/%y"),approval,type="n", ylab = "Approval Rating",xlab="Date", ylim=c(30,100) ) ## plot line for CI. Margin or error about 3 ## matlines has trouble with dates from strptime() colors = rainbow(6) for(i in 1:nrow(BushApproval)) { lines(rep(strptime(date[i],"%m/%d/%y"),2), c(approval[i]-3,approval[i]+3), lty=as.numeric(who[i]), col=colors[as.numeric(who[i])] ) } ## plot points points(strptime(date,"%m/%d/%y"),approval,pch=as.numeric(who)) ## add legend legend((2003-1970)*365*24*60*60,90,legend=as.character(levels(who)),lty=1:6,col=1:6) detach(BushApproval)