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anonymous

  • one year ago

@jeweaver145 Anyone who can help please do! Statistics Use the stem and leaf plot below to answer questions 11-13. Assume that 30|0=300 30|0 31|2 2 32|1 5 33|0 3 6 34|4 5 7 8 35|1 1 2 9 I only need help on thirteen. If this data were put into a bar graph, which of the following would be true regarding the shape of the graph? A. It would be skewed left B. It would be skewed right C. It would be bell shaped D There is not enough information to tell

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  1. anonymous
    • one year ago
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    ok, so as you can see there is a greater amount of numbers along the 350 range than the 300 range, so since there are more on the higher numbers, it would be skewed to the right. Can you see that?

  2. anonymous
    • one year ago
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    here you can see a graph of the data, see how its greater on the right side?

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  3. anonymous
    • one year ago
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    Yes perfect! Thank you so much! @jeweaver145

  4. anonymous
    • one year ago
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    I have just one more and I let you off the hook at least for a second. Is that okay? @jeweaver145

  5. amistre64
    • one year ago
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    skew refers to how the mean is affected, not the greater amount of data.

  6. amistre64
    • one year ago
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    outliers pull the mean away from center, it skews the mean towards the tail.

  7. amistre64
    • one year ago
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    |dw:1442526316345:dw|

  8. anonymous
    • one year ago
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    i think youll find if you calculate the mean, it will lean heavier towards the side of greater data which is what we are seeing in this situation. I could be wrong but that is just my understanding

  9. anonymous
    • one year ago
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    So is it skewing left or right?

  10. anonymous
    • one year ago
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    its still right skewed

  11. anonymous
    • one year ago
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    and yeah just open another question for me!

  12. amistre64
    • one year ago
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    if we tilt this on its side ... you see that the 30s are smaller than the 35s the 30s are pulling the mean away from the greater portion of the data

  13. amistre64
    • one year ago
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    the mean is skewed to the left as a result ...

  14. anonymous
    • one year ago
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    Ugh you guys lol

  15. amistre64
    • one year ago
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    |dw:1442526501749:dw|

  16. anonymous
    • one year ago
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    OH! I see.

  17. anonymous
    • one year ago
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    But doesnt the fact that the question specifically asks for a bar graph not a normal distribution, affect the way this turns out? now you got me wondering haha

  18. amistre64
    • one year ago
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    http://www.statisticshowto.com/wp-content/uploads/2014/02/pearson-mode-skewness.jpg

  19. amistre64
    • one year ago
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    the stem and leaf can be viewed as a crude histogram .. the length of the leafing parts gives us a rough shape.

  20. anonymous
    • one year ago
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    I also have another questions. How do you post screenshots? My next questions has a histogram and I don't know how to post it.

  21. amistre64
    • one year ago
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  22. amistre64
    • one year ago
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    sane the screenshot in a picture file in paint, is what i do, then attach

  23. anonymous
    • one year ago
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    you can use the snipping tool in windows and then save the screen capture, then just attach file

  24. anonymous
    • one year ago
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    In paint? Alrighty. I usually do it in word but of course you can't save it as a picture so that doesnt work.

  25. amistre64
    • one year ago
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    jeweaver, i think your bar graph is a little off ... not sure how you worked density versus the other thing

  26. anonymous
    • one year ago
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    i honestly through the data points into my calculator and told it to make me a histogram of the data, and then based the data on density of occurrence, thats all, the information on the left isnt really significant

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