36 Math

Statistics and probability

Averages, data displays, counting, chance. 25 practice problems, each with an animated walkthrough.

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  1. 1Mean of a data setEasier
  2. 2Missing value from a meanMedium
  3. 3Median of a data setEasier
  4. 4Weighted averageMedium
  5. 5Mean from a frequency tableMedium
  6. 6Effect of an extreme value on mean and medianHarder
  7. 7Reading charts and tablesEasier
  8. 8Reading charts and tablesMedium
  9. 9Spread and modeEasier
  10. 10Simple probabilityEasier
  11. 11Compound eventsMedium
  12. 12Compound eventsHarder
  13. 13The counting principleEasier
  14. 14PermutationsMedium
  15. 15CombinationsHarder
  16. 16Expected valueHarder
  17. 17Probability from a two-way tableMedium
  18. 18Median of a data setEasier
  19. 19Mean after removing a valueMedium
  20. 20Reading a line graphEasier