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Experimental probability from trials

Grade 7 math · Fieldbook Learning

Name ______________________ Date __________

Probability = number of times it happened ÷ number of trials. Write a fraction in lowest terms.

  1. In 40 trials, a six came up 16 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  2. In 40 trials, heads came up 35 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  3. In 50 trials, a hit came up 4 times. What is the experimental probability of a hit? Write a fraction in lowest terms.
  4. In 100 trials, a hit came up 85 times. What is the experimental probability of a hit? Write a fraction in lowest terms.
  5. In 40 trials, a red spin came up 28 times. What is the experimental probability of a red spin? Write a fraction in lowest terms.
  6. In 100 trials, a six came up 74 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  7. In 25 trials, a red spin came up 22 times. What is the experimental probability of a red spin? Write a fraction in lowest terms.
  8. In 50 trials, heads came up 9 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  9. In 75 trials, a six came up 43 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  10. In 24 trials, a hit came up 20 times. What is the experimental probability of a hit? Write a fraction in lowest terms.
  11. In 24 trials, heads came up 17 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  12. In 75 trials, a six came up 13 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  13. In 90 trials, heads came up 17 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  14. In 90 trials, a six came up 86 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  15. In 90 trials, a red spin came up 18 times. What is the experimental probability of a red spin? Write a fraction in lowest terms.
  16. In 45 trials, heads came up 37 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  17. In 240 trials, heads came up 120 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  18. In 240 trials, a six came up 176 times. What is the experimental probability of a six? Write a fraction in lowest terms.
  19. In 240 trials, heads came up 43 times. What is the experimental probability of heads? Write a fraction in lowest terms.
  20. In 120 trials, a hit came up 86 times. What is the experimental probability of a hit? Write a fraction in lowest terms.
More free practice: fieldbooklearning.com/ca/practice/grade-7/experimental-probability-from-trials/

Answer key: Experimental probability from trials

  1. 2/5
  2. 7/8
  3. 2/25
  4. 17/20
  5. 7/10
  6. 37/50
  7. 22/25
  8. 9/50
  9. 43/75
  10. 5/6
  11. 17/24
  12. 13/75
  13. 17/90
  14. 43/45
  15. 1/5
  16. 37/45
  17. 1/2
  18. 11/15
  19. 43/240
  20. 43/60