Two-Way Tables & Relative Frequency

What is the relationship between two categorical variables?

• The relationship can be analyzed using two-way tables to see how one variable affects or correlates with the other.

• The relationship is always linear and can be represented by a straight line.

• The relationship can only be determined through regression analysis.

• The relationship is irrelevant and does not provide any useful information.

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CCSS.8.SP.A.4

What does a relative frequency table show?

• It shows the total count of each category.

• It shows the proportion of each category relative to the total, helping to understand the distribution of data.

• It displays the average value of each category.

• It lists the categories in alphabetical order.

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CCSS.8.SP.A.4

How can you find the percentage of a subgroup in a two-way table?

• Divide the frequency of that subgroup by the total frequency and multiply by 100.

• Add the frequencies of all subgroups and divide by the total frequency.

• Multiply the frequency of the subgroup by 100 and add it to the total frequency.

• Subtract the frequency of the subgroup from the total frequency and multiply by 100.

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CCSS.8.SP.A.4

How do you interpret a relative frequency of 0.11 for teens who like chocolate?

• A relative frequency of 0.11 means that 11% of the total surveyed population who like chocolate are teens.

• A relative frequency of 0.11 indicates that 11% of teens dislike chocolate.

• A relative frequency of 0.11 suggests that 11% of all chocolate lovers are teens.

• A relative frequency of 0.11 shows that 11% of the surveyed teens prefer chocolate over other sweets.

Tags

CCSS.8.SP.A.4

What is the total percentage of all categories in a relative frequency table?

• 50%

• 75%

• 100%

• 90%

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CCSS.8.SP.A.4

What is an example of a two-way table?

• A table showing the number of students who play different sports categorized by gender.

• A list of students' names and their grades in a single subject.

• A chart displaying the weather conditions over a month.

• A diagram illustrating the food chain in an ecosystem.

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CCSS.8.SP.A.4

What is the significance of the total row and column in a two-way table?

• They provide the overall counts for each category, which are essential for calculating relative frequencies.

• They are used to display the data in a more visually appealing way.

• They help in identifying outliers in the data set.

• They are only necessary for large data sets.

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CCSS.8.SP.A.4

What does it mean if 29% of boys cannot bike to school?

• It means that 29% of boys are unable to bike to school due to lack of interest.

• It means that out of all the surveyed boys, 29% reported that they cannot bike to school.

• It means that 29% of boys prefer other modes of transportation to school.

• It means that 29% of boys do not own a bicycle.

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CCSS.6.SP.B.5A

How do you calculate relative frequency?

• By dividing the frequency of a specific category by the total frequency of all categories, then multiplying by 100 to get a percentage.

• By adding the frequencies of all categories together and dividing by the number of categories.

• By taking the square root of the frequency of the specific category.

• By subtracting the frequency of the specific category from the total frequency of all categories.

Tags

CCSS.8.SP.A.4

What is relative frequency?

• The total number of trials conducted in an experiment.

• The ratio of the number of times an event occurs to the total number of trials or observations, often expressed as a percentage.

• The difference between the highest and lowest values in a data set.

• The average of all observed values in a data set.

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CCSS.7.SP.C.6