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Math Extension & Intervention Program

Join our interactive math sessions to improve your skills in Mean, Median, Mode, Range, and Probability. Pre-test on Monday, Post-test on Friday. Learn what these concepts mean and how to calculate them. Bring your calculator! Good luck!

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Math Extension & Intervention Program

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  1. Math Extension and Intervention • Be on time and be respectful to others….A large group…… • No food or drinks or popping gum • No email, searching, or playing regular games..Interactive math websites only • Try to improve • Bring pencil and paper and your calculator or you can use the one on the computer….

  2. Pre-test on Monday…..Post-test on Friday • Score on Pre-test will determine what we help you with • Either Mean, Median, Mode and Range or Probability • Make sure you record your scores on both tests on your paper • Hope you get some Math MOOVES tickets…Good luck

  3. Mode Mean Range Median WHAT DO THEY ALL MEAN?

  4. Mean • Is the average of a set of numbers.

  5. How is the mean of a set of numbers found? • Add all the numbers in the set together. • Divide the sum by the number of numbers in the set. • The quotient is the mean of the set of numbers. • Example: 20, 15, 25 • Add 20+15+25=60 • Divide 60 by 3 • The mean is 20

  6. Median • Is the number that is in the middle of a set of numbers. • (If two numbers make up the middle of a set of numbers then the median is the average of those two numbers.)

  7. How is the median of a set of numbers found? • Arrange the numbers in the set in order from least to greatest. • The middle number is the median of a set of numbers. • If more than one number is in the middle of the set of numbers, the average of those two numbers is the median of the set of numbers.

  8. Examples: • 10, 15, 20 • 15 is the median of this set of numbers. • 10, 15, 20, 25 • Add 15 + 20 = 35 • Divide 35 by 2 = 17.5 • The median of this set of numbers is 17.5

  9. Mode • Is the number in a set of numbers that occurs the most often.

  10. How do I identify the mode of a set of numbers? • Arrange the set of numbers in order from least to greatest. • The number that occurs the most often is the mode of that set of numbers.

  11. Example: • 10, 15, 10, 15, 20, 25, 15, 30 • 10, 10,15, 15, 15, 20, 25, 30 • 15 is the mode of this set of numbers because it is the numbers that occurs the most.

  12. Range • Is the difference between the highest and lowest numbers in a set of numbers.

  13. How is the range of a set of numbers identified? • Arrange the numbers in the set in order from least to greatest. • Subtract the lowest number from the highest number in the set of numbers. • The difference of the two numbers is the range of a set of numbers.

  14. Example: • 10, 15, 20, 25, 30, 35, 40, 45, 50 • 50 – 10 = 40 • 40 is the range of this set of numbers.

  15. What is an outlier in a set of data? • Outlier. For a set of numerical data, any value that is markedly smaller or larger than other values. • For example, in the data set {3, 5, 4, 4, 6, 2, 25, 5, 6, 2} the value of 25 is an outlier. Basically the one that doesn't belong.

  16. It’s Time To Practice! • 10 5 25 50 15 10 40 35 10 20 • 5 10 10 10 15 20 25 35 40 50 • What is the mean? • The answer is 10. • What is the median? • The answer is 17.5 • What is the mode? • The answer is 10. • What is the range? • The answer is 45.

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