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Mean, Median, Mode & Range

Mean, Median, Mode & Range

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Mean, mode, median Presentation Transcript

  • 1. Mean, Median, ModeMean, Median, Mode& Range& RangeBy Mr. ClutterVMS Library2007-2008
  • 2. Copyright © 2000 byMonica YuskaitisVocabulary Review• Sum – the answer to anaddition problem.• Addend – the numbers youadded together to get thesum.6 + 9 = 15
  • 3. Copyright © 2000 byMonica YuskaitisDefinitionMeanMeanMeansMeansAverageAverage
  • 4. Copyright © 2000 byMonica YuskaitisDefinition• MeanMean – the average of agroup of numbers.2, 5, 2, 1, 5Mean = 3Mean = 3
  • 5. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5
  • 6. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5
  • 7. Copyright © 2000 byMonica YuskaitisMean is found by evening outthe numbers2, 5, 2, 1, 5mean = 3
  • 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. 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. 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. 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. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?7, 10, 1611
  • 13. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?2, 9, 14, 2713
  • 14. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?1, 2, 7, 11, 198
  • 15. Copyright © 2000 byMonica YuskaitisWhat is the mean of thesenumbers?26, 33, 41, 5238
  • 16. Copyright © 2000 byMonica YuskaitisDefinitionMeMeddianianis in theis in theMiMiddddlele
  • 17. Copyright © 2000 byMonica YuskaitisDefinition• MedianMedian – the middle numberin a set of ordered numbers.1, 3, 7, 10, 13Median = 7Median = 7
  • 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. 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. 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. 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. 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. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?16, 10, 7107, 10, 16
  • 24. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?29, 8, 4, 11, 19114, 8, 11, 19, 29
  • 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. Copyright © 2000 byMonica YuskaitisWhat is the median of thesenumbers?53, 5, 81, 67, 25, 786053 + 67 = 120 2) 1205, 25, 53, 67, 78, 81
  • 27. Copyright © 2000 byMonica YuskaitisDefinitionModeModeis the mostis the mostPopularPopular
  • 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. Copyright © 2000 byMonica YuskaitisDefinition• ModeMode – the number thatappears most frequently in aset of numbers.1, 1, 3, 7, 10, 13Mode = 1Mode = 1
  • 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. 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. Copyright © 2000 byMonica YuskaitisWhich number is the mode?29, 8, 4, 8, 1984, 8, 8, 19, 29
  • 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. Copyright © 2000 byMonica YuskaitisWhich number is the mode?22, 21, 27, 31, 21, 322121, 21, 22, 27, 31, 32
  • 35. Copyright © 2000 byMonica YuskaitisDefinitionRangeRangeis the distanceis the distanceBetweenBetween
  • 36. Copyright © 2000 byMonica YuskaitisDefinition• RangeRange – the difference betweenthe greatest and the least valuein a set of numbers.1, 1, 3, 7, 10, 13Range = 12Range = 12
  • 37. Copyright © 2000 byMonica YuskaitisHow to Find the Range in aGroup of Numbers• Step 1 – Arrange the numbersin order from least to greatest.21, 18, 24, 19, 2718, 19, 21, 24, 27
  • 38. Copyright © 2000 byMonica YuskaitisHow to Find the Range in aGroup of Numbers• Step 2 – Find the lowest andhighest numbers.21, 18, 24, 19, 2718, 19, 21, 24, 27
  • 39. Copyright © 2000 byMonica YuskaitisHow to Find the Range in aGroup of Numbers• Step 3 – Find the differencebetween these 2 numbers.18, 19, 21, 24, 2727 – 18 = 9The range is 9
  • 40. Copyright © 2000 byMonica YuskaitisWhat is the range?29, 8, 4, 8, 1929 – 4 = 254, 8, 8, 19, 29
  • 41. Copyright © 2000 byMonica YuskaitisWhat is the range?22, 21, 27, 31, 21, 3232 – 21 = 1121, 21, 22, 27, 31, 32
  • 42. Copyright © 2000 byMonica YuskaitisWhat is the range?31, 8, 3, 11, 1931 – 3 = 283, 8, 11, 19, 31
  • 43. Copyright © 2000 byMonica YuskaitisWhat is the range?23, 7, 9, 41, 1941 – 7 = 347, 9, 23, 19, 41
  • 44. This powerpoint was kindly donated towww.worldofteaching.comhttp://www.worldofteaching.com is home to over athousand powerpoints submitted by teachers. This is acompletely free site and requires no registration. Pleasevisit and I hope it will help in your teaching.