A nation divided
The USA has a varied climate, so we might expect yields to differ between states. Rather than trying to reason about 50 states separately, we can use the USA Census Regions to get 9 groups.
The "Corn Belt", where most US corn is grown is in the "West North Central" and "East North Central" regions. The "Wheat Belt" is in the "West South Central" region.
dplyr
is loaded, the corn
and wheat
datasets are available, as is usa_census_regions
.
This exercise is part of the course
Introduction to Writing Functions in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Inner join the corn dataset to usa_census_regions by state
corn %>%
___(___, ___ = "___")