anonymous
  • anonymous
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?
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Can u help me out?
anonymous
  • anonymous
i can attempt to but idk if i'll be right lol
anonymous
  • anonymous
the missing value is -13 i think

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anonymous
  • anonymous
thats all that matters at the moment been working on this test for the past 9 hours and have had trouble with 4 problems
anonymous
  • anonymous
i think the correlation is negative but idk for sure
anonymous
  • anonymous
|dw:1354422222993:dw| This is the table kinda looks like
anonymous
  • anonymous
the slope of the line of best fit would be negative too i think
anonymous
  • anonymous
|dw:1354422393361:dw|
anonymous
  • anonymous
|dw:1354422478255:dw|
anonymous
  • anonymous
|dw:1354422618536:dw|
anonymous
  • anonymous
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
anonymous
  • anonymous
|dw:1354423129456:dw|
anonymous
  • anonymous
|dw:1354423246667:dw|
anonymous
  • anonymous
right it is asking for the last number in the table
anonymous
  • anonymous
which would be -13 correct?
anonymous
  • anonymous
?
anonymous
  • anonymous
Jim what is he saying?
jim_thompson5910
  • jim_thompson5910
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
jim_thompson5910
  • jim_thompson5910
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
anonymous
  • anonymous
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
jim_thompson5910
  • jim_thompson5910
yw

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