Intro to Unit 3: 2-way frequency tables

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What is a two-way frequency table?

Back

A two-way frequency table is a statistical tool that displays the frequency of different outcomes in two categorical variables, allowing for the analysis of the relationship between them.

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How do you read a two-way frequency table?

Back

To read a two-way frequency table, locate the row and column corresponding to the categories of interest, and find the intersection to see the frequency count.

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What does the total in a two-way frequency table represent?

Back

The total in a two-way frequency table represents the sum of all frequencies for a particular category or the overall total of all observations.

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What is the purpose of using a two-way frequency table?

Back

The purpose of using a two-way frequency table is to analyze the relationship between two categorical variables and to summarize data for easier interpretation.

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How can you determine the most likely outcome from a two-way frequency table?

Back

To determine the most likely outcome, identify the highest frequency count in the relevant row or column.

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What is the difference between marginal and joint frequencies?

Back

Marginal frequencies are the totals for each category in a single variable, while joint frequencies are the counts for combinations of categories from both variables.

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How do you calculate the total number of participants in a survey using a two-way frequency table?

Back

To calculate the total number of participants, sum all the joint frequencies in the table.

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What is a conditional frequency in a two-way frequency table?

Back

A conditional frequency is the frequency of a specific category given a condition, often calculated by dividing a joint frequency by a marginal frequency.

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How can you use a two-way frequency table to find probabilities?

Back

You can find probabilities by dividing the frequency of a specific outcome by the total number of observations.

Front

What is an example of a two-way frequency table?

Back

An example of a two-way frequency table could be a table showing the number of students who play sports and those who play musical instruments.