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7. From the National Educators Survey (N= 450), we learn that the correlation between number of alcoholic drinks per week (IV) and missed classes per week is 0.339, and the correlation between number of drinks per week and hours of exercise per week is -0.389. a) Interpret the two correlations. Does number of drinks per week have a stronger correlation with missed classes or exercise? Based on the information given, calculate R? for drinking and exercise and interpret in a sentence. c) The regression equation for drinking and missed classes is Ỹ = 1.53 + .21X. Interpret both a in the equation.

7. From the National Educators Survey (N= 450), we learn that the correlation between number of alcoholic drinks per week (IV) and missed classes per week is 0.339, and the correlation between number of drinks per week and hours of exercise per week is -0.389. a) Interpret the two correlations. Does number of drinks per week have a stronger correlation with missed classes or exercise? Based on the information given, calculate R? for drinking and exercise and interpret in a sentence. c) The regression equation for drinking and missed classes is Ỹ = 1.53 + .21X. Interpret both a in the equation.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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7. From the National Educators Survey (N= 450), we learn that the correlation between number of alcoholic drinks per week (IV) and missed classes per week is 0.339, and the correlation between number of drinks per week and hours of exercise per week is -0.389. a) Interpret the two correlations. Does number of drinks per week have a stronger correlation with missed classes or exercise? b) Based on the information given, calculate R? for drinking and exercise and interpret in a sentence. The regression equation for drinking and missed classes is Ý = 1.53 + .21X. Interpret both c) a in the equation. d) For someone who has 5 drinks per week, what is the predicted number of missed classes? e) If someone has 20 drinks per week, what is the predicted number of missed classes?
Transcribed Image Text:7. From the National Educators Survey (N= 450), we learn that the correlation between number of alcoholic drinks per week (IV) and missed classes per week is 0.339, and the correlation between number of drinks per week and hours of exercise per week is -0.389. a) Interpret the two correlations. Does number of drinks per week have a stronger correlation with missed classes or exercise? b) Based on the information given, calculate R? for drinking and exercise and interpret in a sentence. The regression equation for drinking and missed classes is Ý = 1.53 + .21X. Interpret both c) a in the equation. d) For someone who has 5 drinks per week, what is the predicted number of missed classes? e) If someone has 20 drinks per week, what is the predicted number of missed classes?
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