Question $1.$ TLC

a$.$ Install the ISwR library and use the library function to open it$.$ Look at the help file for the dataset called $$tlc$.$ This is a data set with information on total lung capacity of people who have lung surgery. Make sex a factor, then apply the summary function to the dataframe.

b$.$ Make a scatterplot showing the relationship between tlc $($y axis$)$ to height $($x axis$).$ Give the axes useful labels, and change the color of the points to something other than black.

c$.$ What pattern do you see in the data?