Graphical Descriptive Techniques I - Describing a Set of Nominal Data

4 important questions on Graphical Descriptive Techniques I - Describing a Set of Nominal Data

How do you call a method of presenting data that shows the categories and their counts?

Frequency distribution

How do you call a chart in which vertical bars represent data in different categories?

Bar chart

How do you call a circle subdivided into sectors representing data in different categories?

Pie chart
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What are the two factors that identify when to use frequency and relative frequency tables, bar and pie charts?

  1. Objective: Describe a single set of data.
  2. Data type: Nominal or ordinal.

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