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8. Consider the multiple regression model to investigate the rèlationship between the number of fishes (Y) per section of the stream and the following independent variables: the dissolved oxygen (3< oxy <10, in mg/liter), the maximum depth (1 < maxdepth < 8, in ft), and the water temperature (5

8. Consider the multiple regression model to investigate the rèlationship between the number of fishes (Y) per section of the stream and the following independent variables: the dissolved oxygen (3< oxy <10, in mg/liter), the maximum depth (1 < maxdepth < 8, in ft), and the water temperature (5

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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8. Consider the multiple regression model to investigate the rèlationship between the number of fishes (Y) per section of the stream and the following independent variables: the dissolved oxygen (3< oxy <10, in mg/liter), the maximum depth (1 < maxdepth < 8, in ft), and the water temperature (5<temp<20, in °C). The location of the stream was also considered (lowland and upland). Yhat = 23.09 + 0.199*oxy + 0.3361*maxdepth + 8.6730*temp + 3.8290 lowland. Which of the following is(are) TRUE about the estimated regression coefficient for location of the stream? 1. The location of the stream is a categorical variable, so it is represented by a dummy variable with upland stream as the reference variable. II. Holding other factors constant, the number of fishes in upland is 3.8290 higher than lowland streams. O A. I only O B. Il only O C. Both I and II O D. Neither l nor It
Transcribed Image Text:8. Consider the multiple regression model to investigate the rèlationship between the number of fishes (Y) per section of the stream and the following independent variables: the dissolved oxygen (3< oxy <10, in mg/liter), the maximum depth (1 < maxdepth < 8, in ft), and the water temperature (5<temp<20, in °C). The location of the stream was also considered (lowland and upland). Yhat = 23.09 + 0.199*oxy + 0.3361*maxdepth + 8.6730*temp + 3.8290 lowland. Which of the following is(are) TRUE about the estimated regression coefficient for location of the stream? 1. The location of the stream is a categorical variable, so it is represented by a dummy variable with upland stream as the reference variable. II. Holding other factors constant, the number of fishes in upland is 3.8290 higher than lowland streams. O A. I only O B. Il only O C. Both I and II O D. Neither l nor It
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