Understanding Two-Way Tables

This video tutorial teaches how to organize student data using a two-way table. It explains the structure of two-way tables, common mistakes, and how to convert verbal descriptions into a table format. The tutorial provides a step-by-step guide to filling in and completing the table using given data, ensuring a clear understanding of the process.

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

• To organize data into a single category

• To display data that pertains to two different categories

• To calculate the average of a dataset

• To create a visual graph of data

Which of the following is a common mistake when working with two-way tables?

• Totaling rows and columns

• Placing headers on the top and left

• Using numbers to represent scenarios

• Adding all four numbers in the table together

In the survey of eighth graders, how many students own both a cell phone and an mp3 player?

• 8

• 60

• 73

• 9

How many students do not own a cell phone but own an mp3 player?

• 73

• 8

• 9

• 60

What is the total number of students surveyed?

• 69

• 90

• 17

• 73

How do you calculate the number of students who own only a cell phone?

• Add the number of students with mp3 players to those with neither

• Add the number of students with both devices to those with neither

• Subtract the number of students with both devices from the total with cell phones

• Subtract the number of students with neither device from the total

What is the total number of students who do not own a cell phone?

• 8

• 13

• 17

• 21

How do you find the missing number in the second row of the table?

• Subtract the number of students with neither device from the total

• Add the numbers in the second row

• Subtract the number of students with both devices from the total with cell phones

• Add the numbers in the first row

What is the final total number of students calculated in the table?

• 73

• 17

• 90

• 69

What is the main takeaway from this lesson on two-way tables?

• How to calculate averages

• How to construct a two-way table from a verbal description

• How to create a graph from data

• How to organize data into a single category