What can't correlation measure?
While the correlation coefficient is a convenient way to quantify the strength of a relationship between two variables, it's far from perfect. In this exercise, you'll explore one of the caveats of the correlation coefficient by examining the relationship between a country's GDP per capita (gdp_per_cap
) and happiness score.
Both dplyr
and ggplot2
libraries are loaded and world_happiness
is available.
This exercise is part of the course
Introduction to Statistics in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Scatterplot of gdp_per_cap and life_exp
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