Friquency Distrivutions and Histograms

 

Lesson 2

Frequency Distributions, pp. 42 - 47

Histograms, pp. 51 - 53

Statistical Graphs, pp.56 - 65

Essential question for lesson two: What is the difference between a frequency distribution and histogram?

Use the example with best actors and actresses to illustrate your answer.

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This question involves a preliminary activity to help you and me with the Project for Module I. I need to know how much help you will need for your Module I project.

Attention, this week, I will appreciate any ideas of using Excel, attempts to make a table or graph with Excel, and any attachments of Excel files, right or wrong, as learning opportunities. Please, help each-other, e-mail me your questions.

Hints and Help: To make a frequency distribution, we divide the possible values of the variable  into few (between 3 to 20) groups of values.

Help with ideas: click

Help with Excel - look for Tools-Data Analysis-Histogram: click

For very advance presentations: Help with bins - click

For example the list of all ages of best actresses and actors. The exact year of award is not given. The two variables of this study are: The age of best actress, and the age of best actors, in different years.

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Organizing the row data presented on page 41 is the first step in developing a frequency distribution.

 

To answer the essential question for lesson 2, you need to be able to perform following tasks:

  1. Using Excel, make the entire table for best actors and actresses.
  2. Use exactly 5 groups to develop a group distribution for best actors and actresses.
  3. Use Excel to present the two frequency distribution as two bar graphs without gaps.
  4. Use discussion board for helping each-other, asking questions, and presenting your findings of this question.

I would like to recommend to all students to work in small groups for a fast execution of the illustrative data.