Overview: Matplotlib mistakes often come from poor layout, unclear labels, and wrong scale choices, not from the data ...

We are going to observe correlations and slope in this article. Notice how price changes for GLD on this chart. When you compare SPY vs XOM, there should be high slope and high correlation in the ...

In the previous exercise, you saw that the higher GDP usually corresponds to a higher life expectancy. In other words, there is a positive correlation. Do you think there's a relationship between ...