### Interactive Scatterplot

Scatterplot

#### Description

Click in the graph to generate bivariate data in the rectangle $$[0, w] \times [0, h]$$. The selected points are shown as red dots in the scatterplot, and the coordinates are recorded in the data table. The statistics table gives the means $$s(x)$$, $$s(y)$$ of the $$x$$ and $$y$$ data, the standard deviations $$s(x)$$, $$s(y)$$ of the $$x$$ and $$y$$ data, and the covariance $$s(x,y)$$, correlation $$r(x,y)$$, regression intercept $$a(x,y)$$, and regression slope $$b(x,y)$$ of the bivariate data. In the graph, the horizontal cross hair is centered at the mean of the $$x$$-data and extends one standard deviation on either side. Similarly, the vertical cross hair is centered at the mean of the $$y$$-data and extends one standard deviation on either side. Finally, the least squares regression line is shown in the scatterplot. The width $$w$$ and height $$h$$ can be varied with the input controls.