Grammar of graphics I

1. Using the mtcars data, create a scatterplot of the fuel efficiency as a function of weight.

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2. Repeat the plot but only with vehicles having 4 or 6 cylinders.

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3. Repeat plot #1 but add a smooth line underneath the data points.

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4. Make a boxplot of fuel efficiency for each cylinder size.

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5. Add ” cylinders” to the end of each value in the cylinder column of data and replot #4.

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6. Replot #4 ordering the cylinders such that the median mpg increases from left to right.

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