Two-Way Tables Review

Front

What is a two-way table?

Back

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

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How do you calculate the total number of entries in a two-way table?

Back

To find the total number of entries, sum all the frequencies in the table.

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What is relative frequency in a two-way table?

Back

Relative frequency is the ratio of the frequency of a specific category to the total number of entries, often expressed as a percentage.

Front

How do you find the number of students who can't bike if 80% can?

Back

If 80% of students can bike, then 20% cannot. Multiply the total number of students by 0.20 to find the number who can't bike.

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What does it mean if a two-way table shows a higher frequency for one category?

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It indicates that the category is more common or more likely compared to others in the context of the data being analyzed.

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How do you determine the percentage of a subgroup in a two-way table?

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Divide the frequency of the subgroup by the total frequency and multiply by 100 to get the percentage.

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What is the importance of understanding two-way tables?

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Understanding two-way tables helps in analyzing relationships between two variables and making informed decisions based on data.

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How can you use a two-way table to answer questions about conditional probability?

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You can use the frequencies in the table to calculate conditional probabilities by focusing on the relevant subset of data.

Front

What is the formula for calculating the percentage of students with an A average?

Back

Percentage = (Number of students with A average / Total number of students) x 100.

Front

How do you interpret the results of a two-way table?

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Interpretation involves analyzing the frequencies and relative frequencies to understand the relationships and trends between the variables.