An automotive company is considering the introduction of a new model of sports car that will be available in four-cylinder and six-cylinder engine types. A sample of customers who were interested in this new model were asked to indicate their preference for an engine type for the new model of automobile. The customers were also asked to indicate their preference for exterior color of the automobile from four choices: red, black, green, and white. Consider the following data regarding the customer responses. Red Green Black White
Four Cylinders 143 200 321 420
Six Cylinders 857 800 679 580

a. Construct a clustered-column chart with exterior color as the horizontal variable.
b. What can we infer from the clustered-bar chart in part a?