which

The function which() helps us know directly, which values are low or high, etc. Let's use it in this question.

This exercise is part of the course

Data Science R Basics

Exercise instructions

Use the results from the previous exercise and the function which to determine the indices of murder_rate associated with values lower than 1.

Hands-on interactive exercise

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

# Store the murder rate per 100,000 for each state, in murder_rate
murder_rate <- murders$total/murders$population*100000

# Store the murder_rate < 1 in low 
low <- murder_rate < 1

# Get the indices of entries that are below 1

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