the following data to: a) determine the correlation coefficient, rounded to the nearest thousandth b) find the equation of the regression line for time watching tv and time on the internet c) approximate how much time on the internet can we predict for a person who spends 10 hours weekly watching tv. subject A B C D E F G Watching tv 8 4 2 7 7 5 6 Time on the internet 14 12 8 17 18 9 18

the following data to: a) determine the correlation coefficient, rounded to the nearest thousandth b) find the equation of the regression line for time watching tv and time on the internet c) approximate how much time on the internet can we predict for a person who spends 10 hours weekly watching tv. subject A B C D E F G Watching tv 8 4 2 7 7 5 6 Time on the internet 14 12 8 17 18 9 18

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter1: Functions

Section1.2: The Least Square Line

Problem 7E

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Question

Use the following data to:

a) determine the correlation coefficient, rounded to the nearest thousandth

b) find the equation of the regression line for time watching tv and time on the internet

c) approximate how much time on the internet can we predict for a person who spends 10 hours weekly watching tv.

subject	A	B	C	D	E	F	G
Watching tv	8	4	2	7	7	5	6
Time on the internet	14	12	8	17	18	9	18

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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