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is3535

  • one year ago

WILL FAN & MEDAL HELP What is the means-to-MAD ratio of the two data sets, expressed as a decimal to the nearest tenth? Data Set 1: {14, 18, 21, 15, 17} Data Set 2: {15, 17, 22, 20, 16}

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  1. is3535
    • one year ago
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    @Kash_TheSmartGuy

  2. is3535
    • one year ago
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    @Michele_Laino

  3. is3535
    • one year ago
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    @phi

  4. is3535
    • one year ago
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    @surjithayer

  5. phi
    • one year ago
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    did you find the mean of both data sets yet ? (the average)

  6. is3535
    • one year ago
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    17 and 18

  7. is3535
    • one year ago
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    @phi

  8. anonymous
    • one year ago
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    do you know how to find mad?

  9. phi
    • one year ago
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    for the mad, on data set 1, first find the median. that means sort the numbers, and find the "middle" number on the sorted list.

  10. is3535
    • one year ago
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    i got 17 and 18 for the mean

  11. phi
    • one year ago
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    Let's just do data set 1. the mean is 17 I think the median is also 17: 14, 18, 21, 15, 17 becomes 14, 15, 17, 18, 21

  12. phi
    • one year ago
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    notice 17 is the middle number after you sort the numbers small to big. to find the MAD, find the difference between the median and each number on the list. Always do bigger number minus smaller number (in other words, we want the absolute value) what new list of numbers do you get ?

  13. is3535
    • one year ago
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    it the same

  14. phi
    • one year ago
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    yes, the median is also 17. now subtract 17 from each number on the list and take the absolute value. what is the new list?

  15. is3535
    • one year ago
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    1. is 3 14 - 17 is 3

  16. is3535
    • one year ago
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    like that @phi

  17. is3535
    • one year ago
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    or no

  18. phi
    • one year ago
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    yes, but we want all five numbers

  19. is3535
    • one year ago
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    18-17=1

  20. is3535
    • one year ago
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    21-17=4

  21. is3535
    • one year ago
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    17-15=2

  22. is3535
    • one year ago
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    17-17=0

  23. is3535
    • one year ago
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    im done

  24. phi
    • one year ago
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    now find the average of those 5 numbers:

  25. is3535
    • one year ago
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    all the number are 3 1 4 2 and 0

  26. phi
    • one year ago
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    yes, find the average

  27. is3535
    • one year ago
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    3 + 1 +4 +2 +0 = 10 divde by 5 = 2

  28. phi
    • one year ago
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    yes, now we write the ratio of mean 17 to MAD 2 17/2 or 8.5 that is the "mean to MAD ratio" for data set1

  29. is3535
    • one year ago
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    now what

  30. phi
    • one year ago
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    now we do data set2 the mean of data set 2 is 18 I think we can use the mean to find the MAD: subtract 18 from each number in data set2 and take the absolute value then find the average of those numbers to get the MAD

  31. is3535
    • one year ago
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    18-15=3

  32. is3535
    • one year ago
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    18-17=1

  33. is3535
    • one year ago
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    22=18=4

  34. is3535
    • one year ago
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    20-18=2

  35. is3535
    • one year ago
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    18-16=2

  36. is3535
    • one year ago
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    im done @phi

  37. phi
    • one year ago
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    ok, now what is the average of those?

  38. is3535
    • one year ago
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    2.4

  39. phi
    • one year ago
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    so the MAD is 2.4 the mean-to-MAD ratio is 18/2.4

  40. is3535
    • one year ago
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    7.5

  41. phi
    • one year ago
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    I think those are the answers: 8.5 for data set 1 and 7.5 for data set 2

  42. is3535
    • one year ago
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    i can only choose one answer

  43. is3535
    • one year ago
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    @phi

  44. is3535
    • one year ago
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    i can only choose one answer

  45. phi
    • one year ago
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    oh. what are the choices?

  46. is3535
    • one year ago
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    i have no choices

  47. is3535
    • one year ago
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    now what @phi

  48. phi
    • one year ago
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    I am assuming that each data set has its own mean-to-MAD ratio, so there are two answers (one for each data set) If there is only one answer, then I don't understand the problem. If your book or notes have an example of this type of problem, maybe I can figure it out.

  49. is3535
    • one year ago
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    give me a sec

  50. phi
    • one year ago
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    my only other thought is to lump all the numbers together and find the average of all 10 numbers, and the MAD, and then the mean-to-MAD ratio.

  51. is3535
    • one year ago
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    it its 7.5 two data sets, expressed as a decimal to the nearest tenth? two data sets

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