Sections covered: 5.1, 5.2
Skip everything but “Two Discrete Random Variables” pp. 199-200
Skip everything but “Covariance” pp. 214-215 and “Correlation” pp. 216-218
(In both sections, skip double integrals)
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.
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Two points are needed to calculate r.
Correlation and Covariance Visualization