Get startedGet started for free

Plotting drug-related stops

In a small portion of traffic stops, drugs are found in the vehicle during a search. In this exercise, you'll assess whether these drug-related stops are becoming more common over time.

The Boolean column drugs_related_stop indicates whether drugs were found during a given stop. You'll calculate the annual drug rate by resampling this column, and then you'll use a line plot to visualize how the rate has changed over time.

This exercise is part of the course

Analyzing Police Activity with pandas

View Course

Exercise instructions

  • Calculate the annual rate of drug-related stops by resampling the drugs_related_stop column (on the 'A' frequency) and taking the mean.
  • Save the annual drug rate Series as a new object, annual_drug_rate.
  • Create a line plot of annual_drug_rate using the .plot() method.
  • Display the plot using the .show() function.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Calculate the annual rate of drug-related stops
print(ri.drugs_related_stop.____.mean())

# Save the annual rate of drug-related stops
annual_drug_rate = ri.drugs_related_stop.____.mean()

# Create a line plot of 'annual_drug_rate'


# Display the plot
Edit and Run Code