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Author Question: A regression analysis of hours spent exercising and ounces of weight loss had a slope of 3. We would ... (Read 121 times)

CORALGRILL2014

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on: Jun 20, 2018
A regression analysis of hours spent exercising and ounces of weight loss had a slope of 3. We would predict that
 
  a. for every 1 hour of exercise, a person would lose 3 ounces of weight.
  b. for every ounce lost, a person has to exercise for 7 hours.
  c. every hour of exercise would have no effect on weight.
  d. The slope cannot be used to make predictions, you need the intercept.

Question 2

An example in the text hypothesized that 4 of the variability in life expectancy was accounted for by variability in smoking behavior. The values of r and r2, respectively, are equal to
 
  a. .20 and .04.
  b. .04 and .16.
  c. .04 and .20.
  d. More information is needed.


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fromAlphatoOmega22

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Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

A


CORALGRILL2014

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Reply 2 on: Jun 20, 2018
Excellent

elyse44

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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