The two figures above are similar in that the two lines in each of them are going into reverse directions.
These lines are called “negatively correlated”. Basically, it means that if one line goes up, the other line goes down.
The context of these figures are very interesting.
The first figure shows the approval rating of Bush with the brown line and the crude oil price in the black line. When the oil price goes up, the approval rating drops down. I wonder how Bush’s networth would look like on this figure.
In the second figure, the red line shows the wine consumption in the US, the green line shows the violent crime rate in the US. It is certainly interesting to observe that when people drink more, the crime rate is lower. Drink more wine – It reduces both the cholesterol level and the adrenaline level!