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- 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

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- anonymous

- schrodinger

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- 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

It looks like this

- anonymous

@Tommynaiter thanks alot can u help with more?

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- anonymous

Yea, sure

- 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

I dont know what level you are on, but the residual sum can be calculated by the formula:

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