Two-way tables

Question 1

A two-way table: Year 7 — cats 13, dogs 16; Year 8 — cats 17, dogs 19. How many students prefer dogs?

Answer 

Question 2

Year 7 — cats 15, dogs 20; Year 8 — cats 20, dogs 16. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 3

A two-way table: Year 7 — cats 10, dogs 20; Year 8 — cats 17, dogs 12. How many Year 8 students are there?

Answer 

Question 4

Year 7 — cats 10, dogs 10; Year 8 — cats 20, dogs 11. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 5

A two-way table: Year 7 — cats 14, dogs 8; Year 8 — cats 11, dogs 10. How many students prefer dogs?

Answer 

Question 6

Year 7 — cats 6, dogs 17; Year 8 — cats 12, dogs 18. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 7

A two-way table: Year 7 — cats 20, dogs 19; Year 8 — cats 20, dogs 12. How many students prefer dogs?

Answer 

Question 8

Year 7 — cats 14, dogs 8; Year 8 — cats 12, dogs 20. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 9

A two-way table: Year 7 — cats 18, dogs 10; Year 8 — cats 11, dogs 6. How many Year 8 students are there?

Answer 

Question 10

Year 7 — cats 19, dogs 17; Year 8 — cats 15, dogs 20. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 11

A two-way table: Year 7 — cats 20, dogs 20; Year 8 — cats 9, dogs 15. How many Year 8 students are there?

Answer 

Question 12

Year 7 — cats 9, dogs 8; Year 8 — cats 6, dogs 7. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 13

A two-way table: Year 7 — cats 20, dogs 11; Year 8 — cats 15, dogs 6. How many students prefer dogs?

Answer 

Question 14

Year 7 — cats 18, dogs 7; Year 8 — cats 10, dogs 19. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)

Question 15

A two-way table: Year 7 — cats 7, dogs 17; Year 8 — cats 5, dogs 12. How many students are in the table altogether?

Answer 

Question 16

Year 7 — cats 18, dogs 13; Year 8 — cats 20, dogs 19. A Year 7 student is picked at random. What is the probability they prefer cats? Give a fraction in simplest form.

Answer (as a fraction)