Ch. 5 Joint Probability
Sections covered: 5.1, 5.2
5.1 Jointly Distributed Random Variables
Skip everything but “Two Discrete Random Variables” pp. 199-200
and “Independent Random Variables” pp. 204-205 (discrete case only)
Interactive
Click anywhere on the graph to add points. The correlation coefficient will be calculated.
The correlation coefficient (r) is a measure of the linear relationship between two variables x and y. To get a sense of the connection between the appearance of points – (x,y) pairs – in a scatterplot and the value of r, click anywhere on the graph to add points. To remove points, click the Remove points button and then mouseover points.
|
Add points Remove points |
Two points are needed to calculate r. |