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# Displaying and Describing Categorial Data/Frequency Distributions

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Author: Al Greene
##### Description:

- Teach the difference between frequency and relative frequency and how to make conversions between the two.
- Introduce how to organize categorical data in either a frequency table or contingency table.
- Show how to interpret both marginal and conditional distribution from a contingency table.

This packet defines what frequency distributions are, including frequencies and relative frequencies. It also introduces a contingency table, which is like a frequency distribution, except for 2 or more variables. There are videos on how to construct these, and examples at the end for you to create your own tables.

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Tutorial

## What's in this packet

This packet has 2 videos describing how to make frequency and relative frequency distributions, as well as contingency tables. Some terms that may be new to you are:

• Frequency
• Relative Frequency
• Frequency Table
• Contingency Table
• Marginal Distribution
• Conditional Distribution

Source: Greene

## Frequency Distributions

This powerpoint gives the definitions for frequency distributions and contingency tables, as well as a short example of each.

Source: Greene

## Frequency Distributions

This video shows an example of a frequency distribution, including relative frequency.

Source: Greene

## Contingency Table

This video shows a basic example of a contingency table.

Source: Greene