3.1. The data frame survey contains the results of a survey of 237 first-year statistics students at Adelaide University. For a graphical summary of all the variables, use plot (survey). Note that this produces a dotchart for factor variables, and a normal scores plot for the numeric variables.

One component of this data frame, Exer, is a factor object containing the responses to a question asking how often the students exercised. Produce a barchart ofthese responses. Use table and pie or piechart to create a pie chart ofthe responses. Do you like this better than the bar plot? Which is more informative?

Which gives a better picture of e