Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

DarkendSinz30

For the table that follows, answer the following questions: x y 1 -1 2 -5 3 -9 4 - Would the correlation between x and y in the table above be positive or negative? - Find the missing value of y in the table. - How would the values of this table be interpreted in terms of linear regression? - If a “line of best fit” is placed among these points plotted on a coordinate system, would the slope of this line be positive or negative?

  • one year ago
  • one year ago

  • This Question is Closed
  1. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    Can u help me out?

    • one year ago
  2. srw1496
    Best Response
    You've already chosen the best response.
    Medals 0

    i can attempt to but idk if i'll be right lol

    • one year ago
  3. srw1496
    Best Response
    You've already chosen the best response.
    Medals 0

    the missing value is -13 i think

    • one year ago
  4. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    thats all that matters at the moment been working on this test for the past 9 hours and have had trouble with 4 problems

    • one year ago
  5. srw1496
    Best Response
    You've already chosen the best response.
    Medals 0

    i think the correlation is negative but idk for sure

    • one year ago
  6. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354422222993:dw| This is the table kinda looks like

    • one year ago
  7. srw1496
    Best Response
    You've already chosen the best response.
    Medals 0

    the slope of the line of best fit would be negative too i think

    • one year ago
  8. mahmit2012
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354422393361:dw|

    • one year ago
  9. mahmit2012
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354422478255:dw|

    • one year ago
  10. mahmit2012
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354422618536:dw|

    • one year ago
  11. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    Sorry Mahmit can you type that it is hard to read the drawing of what your saying I can read some of it but not the words themselves

    • one year ago
  12. mahmit2012
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354423129456:dw|

    • one year ago
  13. mahmit2012
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1354423246667:dw|

    • one year ago
  14. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    right it is asking for the last number in the table

    • one year ago
  15. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    which would be -13 correct?

    • one year ago
  16. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

    • one year ago
  17. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    Jim what is he saying?

    • one year ago
  18. jim_thompson5910
    Best Response
    You've already chosen the best response.
    Medals 0

    idk why you're going through all this trouble with regression when all points lie on the same line...namely y = -4x + 3 How did I get this? As you increase x, y is decreasing by 4 each time. So the slope is -4/1 = -4 So y = mx + b y = -4x + b -1 = -4(1) + b -1 = -4 + b -1 + 4 = b 3 = b b = 3 So the equation of the line is y = -4x + 3 You can check this by plugging in x = 1 to get y = -4x + 3 y = -4(1) + 3 y = -4 + 3 y = -1 So when x = 1, y is y = -1 Now plug in x = 2 to get y = -4x + 3 y = -4(2) + 3 y = -8 + 3 y = -5 So when x = 2, y is y = -5 Finally, plug in x = 3 to get y = -4x + 3 y = -4(3) + 3 y = -12 + 3 y = -9 So when x = 3, y is y = -9

    • one year ago
  19. jim_thompson5910
    Best Response
    You've already chosen the best response.
    Medals 0

    When x = 4, y is... y = -4x + 3 y = -4(4) + 3 y = -16 + 3 y = -13 So when x = 4, y is y = -13

    • one year ago
  20. DarkendSinz30
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you jim I have been on this stupid problem for over 4 hours trying to figure out the equation to use for it. Thank you so much

    • one year ago
  21. jim_thompson5910
    Best Response
    You've already chosen the best response.
    Medals 0

    yw

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.