A psychologist collected data on a person's age and the number of hours per week that person spent on the internet. The data are shown in the following table.
Age (years) 74 66 64 57 48 46 38 33 25 20 14
Time (hours) 0 2 4 6 8 10 12 14 16 18 20
(a)
Find the equation of a linear regression line for the data where age is the independent variable, x, and time is the dependent variable. (Round your numerical answers to three decimal places.)
ŷ =

(c)
Find the linear correlation coefficient. (Round your answer to the nearest four decimal places.)
r =

Question

06-10-2022
Mathematics

Answered

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A psychologist collected data on a person's age and the number of hours per week that person spent on the internet. The data are shown in the following table.
Age (years) 74 66 64 57 48 46 38 33 25 20 14
Time (hours) 0 2 4 6 8 10 12 14 16 18 20
(a)
Find the equation of a linear regression line for the data where age is the independent variable, x, and time is the dependent variable. (Round your numerical answers to three decimal places.)
ŷ =

(c)
Find the linear correlation coefficient. (Round your answer to the nearest four decimal places.)
r =

Sagot :

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Sagot :

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