Understanding Two-Way Tables

Crystal surveyed 80 students to find out if they have a dog. She discovered more boys than girls have dogs. The video explains how to complete a two-way table with this data. It shows that 40 boys and 40 girls were surveyed, with 24 girls and 30 boys having dogs. The video demonstrates calculating the number of students without dogs and completing the table with totals, ensuring the numbers add up correctly.

How many students did Crystal survey in total?

• 90

• 60

• 80

• 70

How many girls were surveyed by Crystal?

• 20

• 30

• 40

• 50

How many girls did not have a dog?

• 20

• 18

• 16

• 14

What is a possible number of boys who have dogs?

• 30

• 35

• 25

• 20

If 30 boys have dogs, how many boys do not have dogs?

• 20

• 15

• 5

• 10

What is the total number of students who have dogs?

• 60

• 54

• 50

• 44

What is the total number of students who do not have dogs?

• 30

• 26

• 24

• 20

What is the sum of students with and without dogs?

• 75

• 85

• 80

• 70

What is the purpose of the two-way table in this context?

• To show the number of students in each class

• To determine the favorite pet among students

• To compare the number of boys and girls with dogs

• To calculate the average number of dogs per student