Bar Charts and the Types of Data

Bar Charts and the Types of Data

Bar charts can present the different types of data.

  • Bar charts can present qualitative data (which is described in words).

    The bar chart shown below shows the number of shapes:

    bar chart for qualitative data
  • Bar charts can present quantative data (which is described in numbers).

    Quantitive data can be discrete or continuous:

    • Discrete data can only take certain values

      The bar chart shown below shows the test scores (out of 10) of a class of students. The test scores can only be whole numbers, so they are discrete:

      bar chart for discrete quantitative data
    • Continuous data can take any value (within a range).

      The bar chart shown below shows the heights of a group of friends. Heights can take any value within a range, so they are continuous:

      bar chart for continuous quantitative data

      Note: There are no gaps between the bars because continous data has no gaps in it.

      Also note: A histogram is a type of bar chart for continuous data.

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See Also

What is data? Types of data What is qualitative data? What is quantitative data? What is discrete data? What is continuous data?