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anonymous

  • one year ago

Kelly wants to know if the number of words on a page in her geometry book is generally more than the number of words on a page in her science book. She takes a random sample of 25 pages in each book, then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.

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  1. anonymous
    • one year ago
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    Book Mean Median Mean absolute deviation Geometry 42.9 4 0 1.2 Science 48.5 42 9 .3

  2. Plasmataco
    • one year ago
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    Wat am I supposed to find?

  3. anonymous
    • one year ago
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    Kelly claims that because the mean number of words on each page in the science book is greater than the mean number of words on each page in the geometry book, the science book has more words per page. Based on the data, is this a valid inference? No, because the mean is larger in the science book No, because there is a lot of variability in the science book data Yes, because the mean is larger in the science book Yes, because there is a lot of variability in the science book data

  4. anonymous
    • one year ago
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    ^^^^^

  5. Plasmataco
    • one year ago
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    The third

  6. anonymous
    • one year ago
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    how did u get that though?

  7. Plasmataco
    • one year ago
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    In the table under the word mean, for science it is 48.5 and for math it is 42.9

  8. Plasmataco
    • one year ago
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    It pretty much tells u

  9. jim_thompson5910
    • one year ago
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    I don't agree. The variability in the science book is much higher. So the data is much more spread out (meaning that the true center is likely to be different from the mean). There may be an outlier skewing the mean.

  10. Plasmataco
    • one year ago
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    I guess but in general, the average is what your looking for. But I definitely do agree

  11. Plasmataco
    • one year ago
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    The MAD is quite high.

  12. jim_thompson5910
    • one year ago
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    yeah which is why I'm thinking the variability is high

  13. anonymous
    • one year ago
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    so my answer would be C. @jim_thompson5910

  14. jim_thompson5910
    • one year ago
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    re-read what I wrote above

  15. Plasmataco
    • one year ago
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    I guess. Oodles cas. Believe @jim_thompson5910 is probably right. He is the expert

  16. Plasmataco
    • one year ago
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    B

  17. jim_thompson5910
    • one year ago
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    I'm not always perfect, so you may be correct. I'm still sticking with my answer though.

  18. anonymous
    • one year ago
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    OK so b @jim_thompson5910 ?

  19. anonymous
    • one year ago
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    lol

  20. Plasmataco
    • one year ago
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    Same. Go wit Kim's answer

  21. Plasmataco
    • one year ago
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    Jim. Sry autocorrect

  22. anonymous
    • one year ago
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    k so @jim_thompson5910 says B right

  23. Plasmataco
    • one year ago
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    Yes. He is right

  24. anonymous
    • one year ago
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    k sry lol thanks! :)

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