Grade 7 Statistics & probability worksheet

What is on the worksheet

1. P(A) = 2/26. Find P(not A).

2. Find the mean of 47, 39, 34, 31.

3. Find the range of: 59, 143, 130, 124, 94, 76.

4. P(A) = 17/20. Find P(not A).

5. A bag contains 18 red counters and 2 blue counters. One counter is drawn at random. What is the probability of red?

6. Find the mean of 49, 3, 49, 2.

7. Find the range of: 70, 138, 16, 140, 62, 92.

8. Find the mean of 49, 28, 9, 42.

9. P(A) = 9/30. Find P(not A).

10. Find the median of 92, 84, 62, 34, 71.

11. Find the mean of 34, 38, 39, 26.

12. A bag has 13 red and 8 blue counters. Draw twice, replacing the first counter. What is the probability both are red? Give a simplified fraction.

13. A bag has 9 red and 5 blue counters. Draw twice, replacing the first counter. What is the probability both are red? Give a simplified fraction.

14. Find the range of: 60, 21, 37, 71, 144, 135.

15. P(A) = 4/8. Find P(not A).

16. A bag has 2 red and 11 blue counters. Draw twice, replacing the first counter. What is the probability both are red? Give a simplified fraction.

17. Find the median of 50, 7, 13, 80, 49.

18. P(A) = 5/13. Find P(not A).

19. Find the range of: 91, 131, 123, 99, 63, 81.

20. A bag has 5 red and 14 blue counters. Draw twice, replacing the first counter. What is the probability both are red? Give a simplified fraction.