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Correlation between aerobic exercise and doctor visits

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Reference no: EM132404118

Doctors wanted to know the relationship between aerobic exercise and health. They gathered information on the number of miles ran/walked a week and the number of doctor visits over the course of 1 year.

Miles ran/walked                   Number of doctor visits

           1                                             9

           2                                             8

           3                                             6

           4                                             4

           5                                             2

a) What is the correlation between aerobic exercise and doctor visits? __________

b) Based on the above data, what percentage of variance in doctor visits can be accounted for by aerobic exercise?

c) What are the degrees of freedom and critical values for the above data?

df = _______ C.V. = ________

Conduct a significance test based on 2-tailed with p = .10. Is there a significant difference? Explain in plain English.

c) Based on the previous data on aerobic exercise and doctor visits, what would be the regression equation for these data (hint: calculate a and b in the equation)?

d) Using this equation (c), how many doctor visits would we predict for someone who runs/walks 3.5 miles per week?

Reference no: EM132404118

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