Basic Statistics & Probability
Scatter Plots & Correlation Examples
This is a scatter plot showing the amount of sleep needed per day by age.
As you can see, as you grow older, you need less sleep (but still probably more than you currently are getting...).
These two scatter plots show the average income for adults based on the number of years of education completed (2006 data). 16 years of education means graduating from college. 21 years means landing a Ph.D.