computer Science....

$(20$ pts$)$ Use Tableau for this question. Open the GM cars dataset included with this assignment $($gmcar$\_$price.txt$).$ Each row represents a different car that was sold and includes information about features like the mileage and the price of sale. Hint: use the "Show Me$"$ menu.

a$.$ A treemap based on Price with a main subdivision for the Make of the car and a minor subdivision based on the Model. Because each row of the data file represents a single car but each box in the treemap represents all the cars with a given make and model, pay very close attention to what kind of aggregation is being used.

b$.$ A packed bubble chart of the same type.

c$.$ Write a short paragraph discussing the differences between the two plots. Describe for each something that displayed more clearly than with the other.

d$.$ Create a contingency plot $($Tableau calls it a heat map under Show Me$)$ showing with color the number of cars $($Number of Records$)$ of each Type sold by each Make. Explain at least one observation about that data that this chart makes it easy to see.