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anonymous

  • one year ago

Help, please?

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  1. anonymous
    • one year ago
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    The table below shows the distance y, in miles, traveled by a toy car in x minutes: Time (x) (minutes) 20 30 40 50 Distance (y) (miles) 5 10 15 20 Part A: What is the most likely value of the correlation coefficient of the data in the table? Based on the correlation coefficient, describe the relationship between time and distance traveled by the toy car. (4 points) [Choose the value of correlation coefficient from 1, 0.8, 0.5, 0.02] Part B: What is the value of the slope of the graph of distance versus time, and what does the slope represent? (3 points) Part C: Does the data in the table represent correlation or causation? Explain your answer. (3 points)

  2. anonymous
    • one year ago
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    @Ria23

  3. anonymous
    • one year ago
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    @Jhannybean

  4. anonymous
    • one year ago
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    I really need help with this, please?

  5. dan815
    • one year ago
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    can you tell me how many miles you go up every 10 mins

  6. anonymous
    • one year ago
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    It goes up 5 miles every 10 minutes.

  7. dan815
    • one year ago
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    okay slope is given by change in y/change in x so slope=5/10=1/2=0.5

  8. anonymous
    • one year ago
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    Okay, so was that a different way of asking for slope?

  9. dan815
    • one year ago
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    this is part B part A u have to use correlation coefficeint formula

  10. anonymous
    • one year ago
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    Oh! Okay, now I'm catching up. That confused me for a moment there.

  11. dan815
    • one year ago
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    depending on how high the correlation coefficent is it tells you how dependant the the values of y are on x, or vice vera

  12. anonymous
    • one year ago
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    Okay, I think that makes sense. What's next?

  13. dan815
    • one year ago
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    do it

  14. dan815
    • one year ago
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    http://prntscr.com/87gi5m

  15. dan815
    • one year ago
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    http://prntscr.com/87gija this one is actually best

  16. anonymous
    • one year ago
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    Holy cow that looks terrifying-

  17. dan815
    • one year ago
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    lol

  18. dan815
    • one year ago
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    dont be scared

  19. dan815
    • one year ago
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    find each one what is Sum(x) Sum(y) Sum(xy) sum(x^2) sum(y^2)

  20. dan815
    • one year ago
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    and plug it into the fromula

  21. dan815
    • one year ago
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    n is the number of points so its4 in your case

  22. dan815
    • one year ago
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    |dw:1440207859976:dw|

  23. dan815
    • one year ago
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    fill out those values and plug into formula, i can tell you right now, that the correlation is most likely +1 as it can be modeled perfectly as a slope intercept formula

  24. anonymous
    • one year ago
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    I'm trying to figure it out but I'm still really confused

  25. anonymous
    • one year ago
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    It just doesn't make any sense to me, do you think you could walk me through it?

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