Rules for drawing Graphs
For graphs to be understood there are some conventions that need to be learned.

• Determine the dependant and independent variables
• The units of measurement for each of the variables
• The proportions of the axes
• Analysing your data
• Mark the quantities on both axes and number them at regular intervals
• Plotting and drawing the graph. Smooth curves, straight lines or trend lines?
• Labelling the axes with the variables and units.
• Giving the graph a title
• Plotting more than one graph on a set of axis

Graph Drawing with MS Excel

• Graphical data can be effectively treated using Excel but you have to know a few of it’s idiosyncrasies.

Other Types of Graphical Representation

• Scattergrams
• Histograms and Bar Charts
• Pie Charts
• Area Diagrams