Frequency Tables and Association

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What is a frequency table?

Back

A frequency table is a way to organize data that shows how often each value occurs in a dataset.

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What is a two-way table?

Back

A two-way table is a table that displays data about two categorical variables, showing the frequency of each combination of categories.

Front

What does relative frequency represent?

Back

Relative frequency represents the ratio of the frequency of a specific category to the total number of observations.

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How do you calculate relative frequency?

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Relative frequency = (Frequency of a category) / (Total frequency) * 100%.

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What is the grand total in a frequency table?

Back

The grand total is the sum of all frequencies in the table, representing the total number of observations.

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What is the difference between row totals and column totals?

Back

Row totals sum the frequencies across a row, while column totals sum the frequencies down a column in a two-way table.

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What does it mean if there is an association between two variables?

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An association indicates that the occurrence of one variable is related to the occurrence of another variable.

Front

What is a categorical variable?

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A categorical variable is a variable that can take on one of a limited, fixed number of possible values, representing different categories.

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What is an example of a two-way table?

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A two-way table showing the preferences of students for sports and music genres, with rows for sports and columns for music genres.

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How can you determine if there is an association using a two-way table?

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You can compare the relative frequencies of categories to see if one category is more likely to occur with another.