Math 241 Test 2 Problems

David Gurney

A collection of problem types that will be on the second test in Math 241.


  • 1. Mean & Standard Deviation of Grouped Data
  • 2. Standard Score Comparisons
  • 3. Identifying Parameters & Statistics
  • 4. Data Table Probability: Basic
  • 5. Data Table Probablity: Not So Basic
  • 6. Probability Distribution or Not
  • 7. Discrete Probability Distributions: Mean & Standard Deviation
  • 8. Binomial Experiment or Not
  • 9. Binomial Probability Problems
  • 10. Binomial Experiment: Mean & Standard Deviation

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Mean & Standard Deviation of Grouped Data

Last updated 2/4/2019
Move the seed slider to select a different problem.[br]Check the check box to see the answer.
Grouped data is data in a quantitative frequency distribution.[br]In working problems like these, you need to remember to[br]use both the class frequencies and the class midpoints [br]when computing the answer.[br][br]These problems are based on data from pages 738, 739, [br]744 and 747 of Mario Triola, "Elementary Statisitcs", 12th[br]edition, Pearson Education, Inc., 2014.
– David Gurney

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