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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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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.
Not the answer you are looking for? Search for more explanations.
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 ______.
I dont know what level you are on, but the residual sum can be calculated by the formula: