We will focus on the response variable gpa. (a) produce a plot displaying the distribution of gpa. which plot did you produce, and how would you describe the distribution? (b) do you notice anything unusual in gpa? if you see any values of gpa that are not plausible, create a new clean version of this data set that does not contain those observations. how many observations does you new data set contain? be sure to use this data set for all remaining exercises.