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Frequency tables and dot plots

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Now Playing:Frequency tables and dot plots – Example 0a
Intros
  1. Introduction to Frequency Tables and Dot Plots
  2. Introduction to Frequency Tables and Dot Plots
    What is a Frequency Table?
  3. Introduction to Frequency Tables and Dot Plots
    What is a Dot Plot?
Examples
  1. Analyze the Frequency Table
    Stephen is doing a questionnaire about what movie genres his classmates like and he has made the following frequency table:
    Movie genre frequency
    Comedy4
    Action1
    Horror7
    Sci-fi2
    Thriller6
    1. How many students like horror movies?

    2. If each student could only pick one genre and all students voted, how many students are there in the class?

    3. What is the range?

Practice
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Jump to:Notes
Notes

In this lesson, we will learn:

  • Analyze the Frequency Table
  • Understand the Dot Plot
  • Convert a Frequency Table Into a Dot Plot

  • Frequency table: a table showing the data values and their corresponding frequencies.
  • Dot plot: a simplified version of a histogram. Each dot represents a value in that particular category.
  • Dot plots are not the same as scatter plots:
    • Scatter plots have a set of axes whilst dot plots do not.
    • Each dot in a dot plot has a value of 1. As for a scatter plot, we need to refer to the axis for the value of a dot.