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Mean, median, mode and range power point

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  • that was very good but next time at the beginning you missed out on some information like the mode is the most number that appears the most. the median is the middle value. mean is the toal of the numbers divided by how many nubers there are. and the range is the difference between the longest and the smallest number. but you still did well. well done
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  • 1. Median, Range, Mode and Mean
  • 2. • MEDIAN is the middle • RANGE is the difference from end to end • MODE is the most… often that is AND • MEAN is the adding and dividing machine
  • 3. Definition • Median – the middle number in a set of ordered numbers. 1, 3, 7, 10, 13 Median = 7 Copyright © 2000 by Monica Yuskaitis
  • 4. To find the Median in a group of numbers. • Step 1: Arrange the numbers in order from least to greatest. • Step 2: Find the middle number. • Step 3: If there are two middle numbers, then find the mean (average) of the two numbers.
  • 5. How to Find the Median in a Group of Numbers • Step 1 – Arrange the numbers in order from least to greatest. 21, 18, 24, 19, 27 18, 19, 21, 24, 27 Copyright © 2000 by Monica Yuskaitis
  • 6. How to Find the Median in a Group of Numbers • Step 2 – Find the middle number. 21, 18, 24, 19, 27 18, 19, 21, 24, 27 Copyright © 2000 by Monica Yuskaitis
  • 7. How to Find the Median in a Group of Numbers • Step 2 – Find the middle number. 18, 19, 21, 24, 27 This is your median number. Copyright © 2000 by Monica Yuskaitis
  • 8. How to Find the Median in a Group of Numbers • Step 3 – no step 3 because there is only one middle number. Copyright © 2000 by Monica Yuskaitis
  • 9. What is the median of these numbers? 16, 10, 7 7, 10, 16 10 Copyright © 2000 by Monica Yuskaitis
  • 10. What is the median of these numbers? 29, 8, 4, 11, 19 4, 8, 11, 19, 29 11 Copyright © 2000 by Monica Yuskaitis
  • 11. What is the median of these numbers? 31, 7, 2, 12, 14, 19 2, 7, 12, 14, 19, 31 13 12 + 14 = 26 2) 26 Copyright © 2000 by Monica Yuskaitis
  • 12. What is the median of these numbers? 53, 5, 81, 67, 25, 78 5, 25, 53, 67, 78, 81 60 53 + 67 = 120 2) 120 Copyright © 2000 by Monica Yuskaitis
  • 13. Definition • Range – the difference between the smallest and the largest numbers in a set of numbers. 1, 1, 3, 7, 10, 13 Range = 12 Copyright © 2000 by Monica Yuskaitis
  • 14. To find the Range in a group of numbers • Step 1: arrange the numbers in order from least to greatest. • Step 2: find the lowest and highest numbers. • Step 3: Find the difference between the two numbers.
  • 15. How to Find the Range in a Group of Numbers • Step 1 – Arrange the numbers in order from least to greatest. 21, 18, 24, 19, 27 18, 19, 21, 24, 27 Copyright © 2000 by Monica Yuskaitis
  • 16. How to Find the Range in a Group of Numbers • Step 2 – Find the lowest and highest numbers. 21, 18, 24, 19, 27 18, 19, 21, 24, 27 Copyright © 2000 by Monica Yuskaitis
  • 17. How to Find the Range in a Group of Numbers • Step 3 – Find the difference between these 2 numbers. 18, 19, 21, 24, 27 27 – 18 = 9 The range is 9 Copyright © 2000 by Monica Yuskaitis
  • 18. What is the range? 29, 8, 4, 8, 19 4, 8, 8, 19, 29 29 – 4 = 25 Copyright © 2000 by Monica Yuskaitis
  • 19. What is the range? 22, 21, 27, 31, 21, 32 21, 21, 22, 27, 31, 32 32 – 21 = 11 Copyright © 2000 by Monica Yuskaitis
  • 20. What is the range? 31, 8, 3, 11, 19 3, 8, 11, 19, 31 31 – 3 = 28 Copyright © 2000 by Monica Yuskaitis
  • 21. What is the range? 23, 7, 9, 41, 19 7, 9, 23, 19, 41 41 – 7 = 34 Copyright © 2000 by Monica Yuskaitis
  • 22. Definition • Mode – the number that appears the most in a set of numbers. 1, 1, 3, 7, 10, 13 Mode = 1 Copyright © 2000 by Monica Yuskaitis
  • 23. How to find the Mode in a group of numbers. • Step 1: Arrange the numbers in order from least to greatest. • Step 2: Find the number that is repeated the most. If there isn’t one then there is no mode.
  • 24. How to Find the Mode in a Group of Numbers • Step 1 – Arrange the numbers in order from least to greatest. 21, 18, 24, 19, 18 18, 18, 19, 21, 24 Copyright © 2000 by Monica Yuskaitis
  • 25. How to Find the Mode in a Group of Numbers • Step 2 – Find the number that is repeated the most. 21, 18, 24, 19, 18 18, 18, 19, 21, 24 Copyright © 2000 by Monica Yuskaitis
  • 26. Which number is the mode? 29, 8, 4, 8, 19 4, 8, 8, 19, 29 8 Copyright © 2000 by Monica Yuskaitis
  • 27. Which number is the mode? 1, 2, 2, 9, 9, 4, 9, 10 1, 2, 2, 4, 9, 9, 9, 10 9 Copyright © 2000 by Monica Yuskaitis
  • 28. Which number is the mode? 22, 21, 27, 31, 21, 32 21, 21, 22, 27, 31, 32 21 Copyright © 2000 by Monica Yuskaitis
  • 29. Definition • Mean – the average of a group of numbers. 2, 5, 2, 1, 5 Mean = 3 Copyright © 2000 by Monica Yuskaitis
  • 30. To find the Mean (average) of a group of numbers. • Step 1: Add all of the numbers together. • Step 2: Divide the sum of the numbers by how many numbers there are.
  • 31. How to Find the Mean of a Group of Numbers • Step 1 – Add all the numbers. 8, 10, 12, 18, 22, 26 8+10+12+18+22+26 = 96 Copyright © 2000 by Monica Yuskaitis
  • 32. How to Find the Mean of a Group of Numbers • Step 2 – Divide the sum by the number of addends. 8, 10, 12, 18, 22, 26 8+10+12+18+22+26 = 96 How many addends are there? Copyright © 2000 by Monica Yuskaitis
  • 33. How to Find the Mean of a Group of Numbers • Step 2 – Divide the sum by the number of addends. # of addends 16 6) 96 6 36 36 Copyright © 2000 by Monica Yuskaitis sum
  • 34. How to Find the Mean of a Group of Numbers The mean or average of these numbers is 16. 8, 10, 12, 18, 22, 26 Copyright © 2000 by Monica Yuskaitis
  • 35. What is the mean of these numbers? 7, 10, 16 11 Copyright © 2000 by Monica Yuskaitis
  • 36. What is the mean of these numbers? 2, 9, 14, 27 13 Copyright © 2000 by Monica Yuskaitis
  • 37. What is the mean of these numbers? 1, 2, 7, 11, 19 8 Copyright © 2000 by Monica Yuskaitis
  • 38. What is the mean of these numbers? 26, 33, 41, 52 38 Copyright © 2000 by Monica Yuskaitis