Exercise

# Visualizing standard deviation with line plots

In the last exercise, we looked at how the average miles per gallon achieved by cars has changed over time. Now let's use a line plot to visualize how the *distribution* of miles per gallon has changed over time.

Seaborn has been imported as `sns`

and `matplotlib.pyplot`

has been imported as `plt`

.

Instructions

**100 XP**

- Change the plot so the shaded area shows the standard deviation instead of the confidence interval for the mean.