By the end of this topic, you should :
• To be able to use the appropriate graphical display for the data type: scatter diagram, line graph, pie chart, bar chart, pareto diagram, histogram, ogive.
• To be able to construct stem-and-leaf plots and obtain the 5 figure summary
• To understand the difference between frequency, relative frequency and cumulative frequency in tables and plots
• To use software to produce accurate and informative graphs
• Sources of error in samples and surveys