1. Plot your data in a graphing paper or excel.
2. Make sure that your plotted data has a solid mark to indicate the points in
the graph.
3. Divide your data points by labeling x at the center, at the farthest part of
your line (left or right diagonally).
4. If you feel that the data are now finely divided, then construct a line base
on the x marks you're placing
5. Then you will notice how far or near your date points are by simply looking
at the points near the constructed line that you created.