Hands-On Exploratory Data Analysis with Python

Alcohol versus quality

Let's see how the quality of wine varies with respect to alcohol concentration. This can be done using the box plot. Check the code snippet given here:

sns.boxplot(x='quality', y='alcohol', data = df_red)

And the output of the preceding code is as follows:

Figure 12.7 - A box plot showing the variation of the quality of wine with respect to alcohol concentration

Note the box in Figure 12.7 showing some dots outside of the graph. Those are outliers. Most of the outliers as shown in Figure 12.7 are around wine with quality 5 and 6. We can remove the outliers by passing an argument, showoutliers=False, as shown in the following ...