http://seamonkey.ed.asu.edu/~behrens/2dplotter.html

Type the title and then enter x and y values in their respective boxes.  Data points should be entered on the same line, separated by a space.  Make sure you have an equal number of x and y values.  When you are done, press the "Plot It" button.
 

Here is the link for the  Statistical Instruction Internet Palette (SIIP)