Common Core 8.SP.A.4 worksheet

Question 1

Year 7 — cats 13, dogs 14; Year 8 — cats 20, dogs 15. 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 2

Survey of streaming habits: Under 16: watch daily 15, not daily 37 16 and over: watch daily 9, not daily 40 What percentage of the under-16s watch daily? Round to the nearest whole percent.

Answer 

Question 3

Year 9 survey. Have a pet: 20 with a phone, 17 without. No pet: 13 with a phone, 26 without. Of the students WITH a phone, what fraction have a pet? Give a fraction in simplest form.

Answer (as a fraction)

Question 4

How students travel to school: Year 9: cycle 29, walk 39 Year 10: cycle 36, walk 33 What proportion of all students are "Year 9 and walks"? Give a decimal to 2 decimal places.

Answer 

Question 5

A two-way table: Year 7 — cats 10, dogs 13; Year 8 — cats 9, dogs 20. How many students are in the table altogether?

Answer 

Question 6

In Class X, 24 of 30 students bike to school. In Class Y, 30 of 50 students bike to school. Which class has the higher proportion of cyclists?

• A. X
• B. Y
• C. The same

Question 7

80 students in Club A and 70 students in Club B were asked if they recycle at home. 64 in Club A and 14 in Club B said yes. What percentage of Club B recycle at home?

Answer 

Question 8

Year 7 — cats 7, dogs 11; Year 8 — cats 19, dogs 10. 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

Survey of streaming habits: Under 16: watch daily 34, not daily 22 16 and over: watch daily 36, not daily 24 What percentage of the under-16s watch daily? Round to the nearest whole percent.

Answer 

Question 10

Year 9 survey. Have a pet: 23 with a phone, 24 without. No pet: 21 with a phone, 22 without. Of the students WITH a phone, what fraction have a pet? Give a fraction in simplest form.

Answer (as a fraction)

Question 11

How students travel to school: Year 9: cycle 20, walk 16 Year 10: cycle 10, walk 28 What proportion of all students are "Year 10 and walks"? Give a decimal to 2 decimal places.

Answer 

Question 12

A two-way table: Year 7 — cats 6, dogs 9; Year 8 — cats 11, dogs 14. How many students are in the table altogether?

Answer 

Question 13

In Class X, 18 of 60 students bike to school. In Class Y, 15 of 50 students bike to school. Which class has the higher proportion of cyclists?

• A. X
• B. Y
• C. The same

Question 14

40 students in Club A and 40 students in Club B were asked if they recycle at home. 8 in Club A and 8 in Club B said yes. What percentage of Club B recycle at home?

Answer 

Question 15

Year 7 — cats 17, dogs 8; Year 8 — cats 13, 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 16

Survey of streaming habits: Under 16: watch daily 33, not daily 22 16 and over: watch daily 37, not daily 31 What percentage of the 16-and-overs watch daily? Round to the nearest whole percent.

Answer