Management 202: Presentation




Diagrams and Graphs

*Diagrams are dimensional forms of presentation. Diagrams give a bird’s eye view of the data. They are visually attractive hence they have great memorization value compared to figures.

Principles of diagram construction

  • Should have a title
  • Suitable scales should be on the x and y axis
  • A key should be provided where necessary to explain all the symbols used.
  • The diagram should be clean and neat.



Bar charts

  • Simple/single bar charts
  • Multiple bar charts
  • Component bar charts

Pie Charts


  • Line graphs/ Histograms
  • Lorenzo curve


  • The current data graph
  • The cumulative graph
  • The moving annual graph



*Lorenzo Curve shows disparity in proportions as common in the distribution of economic goods such as distribution of income in a population, the distribution of land, profits and so on.

*Z-chart is used to present data that varies seasonally such as rainfall. It consists of three 3 graphs and when drawn resembles the letter Z






One thought on “Management 202: Presentation

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