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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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Mean, median, mode and range power point

1. 1. Median, Range, Mode and Mean
2. 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. 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. 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. 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. 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. 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. 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. 9. What is the median of these numbers? 16, 10, 7 7, 10, 16 10 Copyright © 2000 by Monica Yuskaitis
10. 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. 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. 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. 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. 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. 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. 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. 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. 18. What is the range? 29, 8, 4, 8, 19 4, 8, 8, 19, 29 29 – 4 = 25 Copyright © 2000 by Monica Yuskaitis
19. 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. 20. What is the range? 31, 8, 3, 11, 19 3, 8, 11, 19, 31 31 – 3 = 28 Copyright © 2000 by Monica Yuskaitis
21. 21. What is the range? 23, 7, 9, 41, 19 7, 9, 23, 19, 41 41 – 7 = 34 Copyright © 2000 by Monica Yuskaitis
22. 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. 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. 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. 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. 26. Which number is the mode? 29, 8, 4, 8, 19 4, 8, 8, 19, 29 8 Copyright © 2000 by Monica Yuskaitis
27. 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. 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. 29. Definition • Mean – the average of a group of numbers. 2, 5, 2, 1, 5 Mean = 3 Copyright © 2000 by Monica Yuskaitis
30. 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. 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. 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. 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. 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. 35. What is the mean of these numbers? 7, 10, 16 11 Copyright © 2000 by Monica Yuskaitis
36. 36. What is the mean of these numbers? 2, 9, 14, 27 13 Copyright © 2000 by Monica Yuskaitis
37. 37. What is the mean of these numbers? 1, 2, 7, 11, 19 8 Copyright © 2000 by Monica Yuskaitis
38. 38. What is the mean of these numbers? 26, 33, 41, 52 38 Copyright © 2000 by Monica Yuskaitis