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# Mean, mode, median

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Mean, Median, Mode & Range

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### Mean, mode, median

1. 1. Mean, Median, ModeMean, Median, Mode& Range& RangeBy Mr. ClutterVMS Library2007-2008
4. 4. Copyright © 2000 byMonica YuskaitisDefinition• MeanMean – the average of agroup of numbers.2, 5, 2, 1, 5Mean = 3Mean = 3
5. 5. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5
6. 6. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5
7. 7. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5mean = 3
8. 8. Copyright © 2000 byMonica YuskaitisHow to Find the Mean of aGroup of Numbers• Step 1 – Add all the numbers.8, 10, 12, 18, 22, 268+10+12+18+22+26 = 96
9. 9. Copyright © 2000 byMonica YuskaitisHow to Find the Mean of aGroup of Numbers• Step 2 – Divide the sum bythe number of addends.8, 10, 12, 18, 22, 268+10+12+18+22+26 = 96How many addends are there?
10. 10. Copyright © 2000 byMonica YuskaitisHow to Find the Mean of aGroup of Numbers• Step 2 – Divide the sum bythe number of addends.6)96 sum# of addends1636663
11. 11. Copyright © 2000 byMonica YuskaitisHow to Find the Mean of aGroup of NumbersThe mean or average of thesenumbers is 16.8, 10, 12, 18, 22, 26
12. 12. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?7, 10, 1611
13. 13. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?2, 9, 14, 2713
14. 14. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?1, 2, 7, 11, 198
15. 15. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?26, 33, 41, 5238
17. 17. Copyright © 2000 byMonica YuskaitisDefinition• MedianMedian – the middle numberin a set of ordered numbers.1, 3, 7, 10, 13Median = 7Median = 7
18. 18. Copyright © 2000 byMonica YuskaitisHow to Find the Median in aGroup of Numbers• Step 1 – Arrange the numbersin order from least to greatest.21, 18, 24, 19, 2718, 19, 21, 24, 27
19. 19. Copyright © 2000 byMonica YuskaitisHow to Find the Median in aGroup of Numbers• Step 2 – Find the middlenumber.21, 18, 24, 19, 2718, 19, 21, 24, 27
20. 20. Copyright © 2000 byMonica YuskaitisHow to Find the Median in aGroup of Numbers• Step 2 – Find the middlenumber.18, 19, 21, 24, 27This is your median number.
21. 21. Copyright © 2000 byMonica YuskaitisHow to Find the Median in aGroup of Numbers• Step 3 – If there are two middlenumbers, find the mean of thesetwo numbers.18, 19, 21, 25, 27, 28
22. 22. Copyright © 2000 byMonica YuskaitisHow to Find the Median in aGroup of Numbers• Step 3 – If there are two middlenumbers, find the mean of thesetwo numbers.21+ 25 = 462)4623 median
23. 23. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?16, 10, 7107, 10, 16
24. 24. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?29, 8, 4, 11, 19114, 8, 11, 19, 29
25. 25. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?31, 7, 2, 12, 14, 19132, 7, 12, 14, 19, 3112 + 14 = 26 2) 26
26. 26. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?53, 5, 81, 67, 25, 786053 + 67 = 120 2) 1205, 25, 53, 67, 78, 81
28. 28. Copyright © 2000 byMonica YuskaitisDefinition• A la modeA la mode – the mostpopular or that which is infashion.Baseball caps are a la mode today.
29. 29. Copyright © 2000 byMonica YuskaitisDefinition• ModeMode – the number thatappears most frequently in aset of numbers.1, 1, 3, 7, 10, 13Mode = 1Mode = 1
30. 30. Copyright © 2000 byMonica YuskaitisHow to Find the Mode in aGroup of Numbers• Step 1 – Arrange the numbersin order from least to greatest.21, 18, 24, 19, 1818, 18, 19, 21, 24
31. 31. Copyright © 2000 byMonica YuskaitisHow to Find the Mode in aGroup of Numbers• Step 2 – Find the number thatis repeated the most.21, 18, 24, 19, 1818, 18, 19, 21, 24
32. 32. Copyright © 2000 byMonica YuskaitisWhich number is the mode?29, 8, 4, 8, 1984, 8, 8, 19, 29
33. 33. Copyright © 2000 byMonica YuskaitisWhich number is the mode?1, 2, 2, 9, 9, 4, 9, 1091, 2, 2, 4, 9, 9, 9, 10
34. 34. Copyright © 2000 byMonica YuskaitisWhich number is the mode?22, 21, 27, 31, 21, 322121, 21, 22, 27, 31, 32