Grade 9 Statistics & probability worksheet in three levels
The same 20-question worksheet on statistics & probability in Support, Core and Challenge versions. Question by question, each version keeps the topic and changes the difficulty.
Easier questions on the same topics, for students who need more practice with the basics.
Questions
20 (20 easy)
Grade range
Grades 3 to 8
Topics
Statistics & probability
Sample questions
A reading survey records 8 fiction votes, 6 science votes and 4 history votes. How many votes?
Scores are 4, 6 and 8. Find the mean.
Ordered scores are 2, 3, 7, 8, 20. Find the median.
Core
Questions at the expected level for the grade.
Questions
20 (20 medium)
Grade range
Grades 5 to 12
Topics
Statistics & probability
Sample questions
P(A) = 13/23. Find P(not A).
Find the median of 50, 7, 13, 80, 49.
Find the median of 21, 52, 7, 3, 7.
Challenge
Harder questions on the same topics, for students who are ready to stretch.
Questions
20 (20 challenge)
Grade range
Grades 9 to 12
Topics
Statistics & probability
Sample questions
A score of 14 occurs 9 times; a score of 22 occurs 2 times. Find the mean as a fraction or decimal.
Club A has 19 bus users and 5 walkers. Club B has 19 bus users. Given that a student is in Club A, what is the probability they use the bus? Give a simplified fraction.
Club A has 8 bus users and 13 walkers. Club B has 11 bus users. Given that a student is in Club A, what is the probability they use the bus? Give a simplified fraction.
Using the three versions
Start everyone with the same short explanation, then hand out Support, Core or Challenge.
Question numbers line up across the versions, so you can go through the answers with the whole class.
The PDF has a cover page and each version on its own pages; the answer keys PDF has all three keys.