Scatterplots for outlier detection

A scatterplot is another handy method to identify outliers visually. Although it is usually used to plot two variables against each other to inspect their relationship, using the trick from the video, you can plot a scatterplot with only one variable to make the outliers stand out.

matplotlib.pyplot is loaded as plt. The data is available as prices.

Cet exercice fait partie du cours

Anomaly Detection in Python

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Instructions

Create a list of consecutive integers with the same length as prices.
Create a scatterplot with integers on the x-axis and prices on the y-axis.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

# Create a list of consecutive integers
integers = ____(____(prices))

plt.figure(figsize=(16, 8))

# Plot a scatterplot
plt.____(____, ____, c='red', alpha=0.5)
plt.show()

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