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.
Why is a mouse is often called a pointing device?   A pointing device can also refer to a special stick (sometimes telescopic, to reduce the length when not in use), or a lamp with a narrow light beam that is pointed â¦at a map, blackboard, slide screen, movie screen, etc.; sometimes the light is in the form of an arrow.