anonymous
  • anonymous
WILL GIVE MEDAL !!!! Given the data set (4, 85), (7, 92), (14, 110), which of the following equations best represents a line of best fit? y = seven over threex + 75.67 y = two over threex + 75.67 y = five over threex − 75.5 y = seven over fourx − 75.5
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
If I use a CAS program to make regression over the 3 points, then I get a function: y = 2.5127x + 74.7278, whcih means the correct answer is the first, since that is closest.
anonymous
  • anonymous
It looks like this
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anonymous
  • anonymous
@Tommynaiter thanks alot can u help with more?

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anonymous
  • anonymous
Yea, sure
anonymous
  • anonymous
An equation was used to predict possible weights of puppies at 6 months of age. The actual weights of the puppies are also listed. Actual weight (ounces) 9 15 16 20 20 26 Predicted weight (ounces) 9 12 15 18 21 24 The sum of the residuals is ______.
anonymous
  • anonymous
I dont know what level you are on, but the residual sum can be calculated by the formula:
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