Scatter Diagram

What is it?	A graph showing the pairs of plotted values of two factors, one that is believed to be independent and the other dependent.
When is it used?	Do you want to test whether the performance of one factor is related to the performance of another? Are the two (2) factors: A quality characteristic (system performance measure) and a factor you suspect affects it, or two (2) related quality characteristics (system performance measure), or two (2) factors suspected of relating to the same quality characteristics (system or performance measure
How is it made?	Draw and label the horizontal and vertical axes. Scale each axes. Plot the points. Interpret the scatter diagram.