Display of quantitative data

• Scatter diagrams

  • To display correlation
  • One co variable on x axis other on y axis
  • A dot is placed where co variables meet
• Frequency tables

  • Systematic way of representing data
  • organised in rows and columns
  • displays how often an event occurred using tallies
• Histograms

  • Continuous data
  • No spaces between bars
  • x-axis (across) shows the score/numbers.
  • The y-axis (‘y to the sky’) shows the frequency of the score.
• Bar chart

  • data not continuous e,g can be placed in any order
  • Separated bars
  • The x-axis (across) shows the categories.
  • The y-axis (‘y to the sky’) shows the frequency.
• Normal distribution

  • Frequency represented on one axis
  • symmetrical spread of frequency data that forms a bell shaped curve
  • Mean median and mode are all in the same point