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bobobox

  • one year ago

math help needed

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  1. bobobox
    • one year ago
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    Here is the question

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  2. bobobox
    • one year ago
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    First two options

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  3. bobobox
    • one year ago
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    Last two option

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  4. bobobox
    • one year ago
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    me too if i dont finish theses last assignments right no I cant take my final exam and If I cant take my final exam I am going to stay back

  5. rvc
    • one year ago
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    lol @UsukiDoll

  6. bobobox
    • one year ago
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    @jim_thompson5910

  7. bobobox
    • one year ago
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    anyone?

  8. bobobox
    • one year ago
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    I am almost in teaars here people i need help

  9. UnkleRhaukus
    • one year ago
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    the last thing you have does is to plot the data, what happens next?

  10. bobobox
    • one year ago
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    im not sure I need someone to go through the step with me thats why im here

  11. UnkleRhaukus
    • one year ago
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    the question says you have plotted the data, and already have a line of best fit, the options are A plot the data... [already complete] B offer a conclusion C draw a line of best fit [already complete] D find correlation coefficient

  12. UnkleRhaukus
    • one year ago
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    how can you offer a conclusion without first finding a quantitative measure ?

  13. bobobox
    • one year ago
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    D I think becuase it's the legitmitlly the most logical

  14. bobobox
    • one year ago
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    becuase you are right you cant just offer a conclusion

  15. UnkleRhaukus
    • one year ago
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    makes sense

  16. bobobox
    • one year ago
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    I cant just go with what makes sense I need to make sure I choose the best answer or else I will not be going to be able to go to highschool

  17. UnkleRhaukus
    • one year ago
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    You have four options, presumably one is correct, and three are incorrect. If you have found that option D is more correct than A,B,C, D must be the correct option.

  18. bobobox
    • one year ago
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    I know but they pressure here is imense I think it's d but I have never been very good at math.... There is a 25% percent chance I will get it right

  19. UnkleRhaukus
    • one year ago
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    There is a 25% chance if you don't read the question and simply guess. We read the question, and ruled out two of the option immediately. This left us with two options and and 50% chance of guessing right. Then we used reason, to assert that one of the remaining options made more sense than the other remaining option. If our reasoning is sound, we have found the correct option with 100% probability.

  20. bobobox
    • one year ago
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    do you think you might be able to walk me through the last two questions?

  21. UnkleRhaukus
    • one year ago
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    ok

  22. bobobox
    • one year ago
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    Question

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  23. bobobox
    • one year ago
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    First two options

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  24. bobobox
    • one year ago
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    Last two answer

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  25. UnkleRhaukus
    • one year ago
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    according to http://mathbits.com/MathBits/TISection/Statistics2/correlation.htm " A correlation greater than 0.8 is generally described as strong, whereas a correlation less than 0.5 is generally described as weak. "

  26. UnkleRhaukus
    • one year ago
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    so what do you think about a correlation coefficient of 0.67

  27. bobobox
    • one year ago
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    at first I thought maybe it was b but now im not to sure

  28. UnkleRhaukus
    • one year ago
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    Are there only two options here?

  29. bobobox
    • one year ago
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    no

  30. UnkleRhaukus
    • one year ago
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    oh, right i see all four options now

  31. bobobox
    • one year ago
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    okay good

  32. UnkleRhaukus
    • one year ago
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    A: Yes, everyone who doesn't exercise is by definition unhealthy for this to be true , we would expect the correlation coefficient to very close to 1.00

  33. bobobox
    • one year ago
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    okay so not a

  34. UnkleRhaukus
    • one year ago
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    B: Yes, the correlation coefficient is above 0.5, so that implies causation hmmm 0.67 is above 0.50

  35. UnkleRhaukus
    • one year ago
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    C: No, the data are only weakly correlated and may people are healthy who don't exercise for this to be true we would expect correlation to be <0.50

  36. bobobox
    • one year ago
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    this is true

  37. UsukiDoll
    • one year ago
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    your correlation is 0.67 so that's >0.5 it's not a weak one

  38. bobobox
    • one year ago
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    esaxcly

  39. bobobox
    • one year ago
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    my spelling sucks

  40. UnkleRhaukus
    • one year ago
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    D: No, poor health and not exercising are completely unrelated for this to be true we would expect correlation to be close to 0.00

  41. UsukiDoll
    • one year ago
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    obviously not C and D. doesn't make sense if your correlation is above 0.5

  42. bobobox
    • one year ago
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    so wouldn't it be b?

  43. UsukiDoll
    • one year ago
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    yeah

  44. bobobox
    • one year ago
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    ready for my last question of the day

  45. UnkleRhaukus
    • one year ago
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    yeap, there is significant correlation

  46. UnkleRhaukus
    • one year ago
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    NEXT q

  47. bobobox
    • one year ago
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    Question

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  48. bobobox
    • one year ago
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    First two options

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  49. bobobox
    • one year ago
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    Last two options

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  50. UnkleRhaukus
    • one year ago
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    What do you think of the options? Some of the statements in the options are too strong, can you rule them out?

  51. UsukiDoll
    • one year ago
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    so Michele plays better than other teams and watches videos. wow !

  52. bobobox
    • one year ago
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    i dont think it can be a becuase it true, you can see how the other team play and attacks

  53. UnkleRhaukus
    • one year ago
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    i agree, option A cannot be right, the statement is too strong

  54. bobobox
    • one year ago
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    its not d because we have information... right?

  55. UsukiDoll
    • one year ago
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    I think it's double edge sword 1. she is already good before watching videos of other teams 2. she is a horrible player so she watches videos and copies moves from other teams

  56. bobobox
    • one year ago
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    this is hard....you are right it's a double edge sword

  57. UsukiDoll
    • one year ago
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    getting good at soccer requires skill and practice.

  58. bobobox
    • one year ago
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    yeah

  59. UnkleRhaukus
    • one year ago
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    Which is the correct option @bobobox ?

  60. UsukiDoll
    • one year ago
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    I think b is ridiculous. Players can't copy everything perfectly without messing it up.

  61. bobobox
    • one year ago
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    i think it's c becuase I can watch all the soccor in the world and I wont be playing at the world cup

  62. bobobox
    • one year ago
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    what do you guys think

  63. UnkleRhaukus
    • one year ago
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    yeah, watching videos and playing better did correlate, but we cannot draw any conclusion about causation, there are many other factors at play

  64. bobobox
    • one year ago
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    wait so what about d

  65. UnkleRhaukus
    • one year ago
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    we concluded that there was a correlation

  66. UsukiDoll
    • one year ago
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    there are other reasons to why she played better - extra practice - after school practice - private coaching

  67. bobobox
    • one year ago
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    okay so c

  68. UnkleRhaukus
    • one year ago
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    yay!

  69. bobobox
    • one year ago
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    okay that right!!!! But the question we did before this was wrong

  70. UnkleRhaukus
    • one year ago
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    Are you sure?

  71. UnkleRhaukus
    • one year ago
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    hmmm i suppose a correlation of 0.67 doesn't really imply a causation, it just suggests one

  72. UnkleRhaukus
    • one year ago
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    but 0.67 is much greater than 0.50, it's not a weak correlation, unless the thresholds i got form that web-sight are way off

  73. bobobox
    • one year ago
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    Positive but that's okay I got a 70 exactly so I'm happy

  74. UnkleRhaukus
    • one year ago
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    what was the answer they wanted?

  75. UnkleRhaukus
    • one year ago
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    the other options all seem worse

  76. UsukiDoll
    • one year ago
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    WHAT! Ok I'm glad that the last question was right but yeah I agree with Unkle. what do they want?

  77. UsukiDoll
    • one year ago
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    and it's website xD

  78. UnkleRhaukus
    • one year ago
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    my spelling sucks tooo

  79. bobobox
    • one year ago
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    It's Laurel springs school and they don't tell you the right answer they just say it's wrong

  80. UsukiDoll
    • one year ago
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    either the site Unkle got was wrong or they are stupid

  81. UsukiDoll
    • one year ago
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    that's a private school? O_O!

  82. rvc
    • one year ago
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    Good job @UnkleRhaukus and @UsukiDoll

  83. UnkleRhaukus
    • one year ago
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    assuming Laurel springs school is right: i guess it has to be C: "No, the data are only weakly correlated and may people are healthy who don't exercise" and that the threshold they are using is <0.70 , is weak correlation.

  84. bobobox
    • one year ago
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    Agreed I could have never done that without you guys

  85. UsukiDoll
    • one year ago
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    OH WOW! How does Physical Education work in an online school XD

  86. UsukiDoll
    • one year ago
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    i had to go to a gym at my high school

  87. UnkleRhaukus
    • one year ago
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    Remember that even a perfect correlation, doesn't imply causation.

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