Grade 10 Statistics & probability worksheet

What is on the worksheet

1. Find the population variance of 9, 10, 11, 12, 13. Divide by 5.

2. Club A has 17 bus users and 17 walkers. Club B has 3 bus users. Given that a student is in Club A, what is the probability they use the bus? Give a simplified fraction.

3. Find the population variance of 28, 31, 34, 37, 40. Divide by 5.

4. Data: 16, 26, 36, 46, 56, 66, 76, 86. Using medians of the lower four and upper four values, find the interquartile range.

5. Data: 43, 54, 65, 76, 87, 98, 109, 120. Using medians of the lower four and upper four values, find the interquartile range.

6. P(A) = 21/38. Find P(not A).

7. How many different groups of 3 can be chosen from 13 distinct people, if order does not matter?

8. Find the population variance of 66, 69, 72, 75, 78. Divide by 5.

9. Find the population variance of 62, 71, 80, 89, 98. Divide by 5.

10. P(A) = 24/25. Find P(not A).

11. Find the population variance of 62, 64, 66, 68, 70. Divide by 5.

12. Find the population variance of 52, 59, 66, 73, 80. Divide by 5.

13. A score of 21 occurs 8 times; a score of 4 occurs 1 times. Find the mean as a fraction or decimal.

14. Find the population variance of 45, 50, 55, 60, 65. Divide by 5.

15. P(A) = 23/38. Find P(not A).

16. Club A has 25 bus users and 9 walkers. Club B has 15 bus users. Given that a student is in Club A, what is the probability they use the bus? Give a simplified fraction.

17. Club A has 21 bus users and 22 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.

18. Find the population variance of 16, 20, 24, 28, 32. Divide by 5.

19. A score of 23 occurs 1 times; a score of 14 occurs 2 times. Find the mean as a fraction or decimal.

20. Find the population variance of 55, 57, 59, 61, 63. Divide by 5.