graphs

• A graph is a visual representation of a set of values in relation to another set
• A graph is used to present data being presented in tabular form
• Graph


  A diagram that represents the variation of a variable in comparison with that of one or more other variables
• Graphs and charts help people get a sense of data quickly
• Graphs can help show a relationship, a trend or comparison
• Pie chart


  A circle divided into parts that shows the relationships among parts as well as the relationship of a part to the whole
• Bar graph

  Used for making direct visual comparison of data, with bars drawn horizontally or vertically
• Line graph

  Used to show changes between two quantitative data, usually with one quantity being time
• Histogram


  A graphical display of data using bars of different heights, with no gaps between the bars
• Types of histogram distributions

  • Normal distribution
  • Bimodal distribution
  • Right skewed distribution
  • Left skewed distribution
  • Random distribution
• Ogive


  A type of frequency graph that shows cumulative frequencies, with cumulative percent plotted on the y-axis and class boundaries on the x-axis