Scatterplot matrices. For a set of data variables (dimensions) X1, X2, ... , Xk, the scatter plot matrix shows all the pairwise scatter plots of the variables on a single view with multiple scatterplots in a matrix format. For k variables, the scatterplot matrix will contain k rows and k columns.
Using a computer mouse is one of the first steps to properly operating a computer. The mouse allows you to move the cursor and click programs. These steps will show you how to use a PC and MAC computer mouse, whether it is plugged into the computer, wireless, or connects via bluetooth.
The three main mouse device types are: 1  Mechanical: Built with a trackball underneath the mouse and mechanical sensors, allowing easy movement in all directions. 2  Optomechanical: Similar to the mechanical type but uses optical, rather than mechanical, sensors to detect trackball movement.  Optical: The most expensive.