1. It was found that the mean scores in algebra (X) and statistics (Y) for a group of students are 80 and 71.72222 and the corresponding standard deviations are 13.39 and 13.08. If the correlation coefficient is approximately -0.5, what could be a likely equation of the equation of best fit? A. y = 110.65 + 0.49 x B. y = 110.65 - 0.49 x C. y = 110.65 x + 0.49 D. y = 110.65 x - 0.49 2. How do you interpret the correlation in this problem? A. Higher the algebra score, higher is the score in statistics. B. Higher the algebra score, lower is the score in statistics. C. Lower the algebra score, lower is the score in statistics. D. No meaningful conclusion can be made. 3. In order to obtain the line of best fit to predict peak flow rate (l/min) based on height of a person (in cm), the slope is calculated as 4.5 and the intercept as -153.9. What would be the predicted peak flow rate in l/min for a person who is 160 cm tall? A. 24628.5 B. -24619.5 C. 873.9 D. 566.1
1. It was found that the mean scores in algebra (X) and statistics (Y) for a group of students are 80 and 71.72222 and the corresponding standard deviations are 13.39 and 13.08. If the correlation coefficient is approximately -0.5, what could be a likely equation of the equation of best fit? A. y = 110.65 + 0.49 x B. y = 110.65 - 0.49 x C. y = 110.65 x + 0.49 D. y = 110.65 x - 0.49 2. How do you interpret the correlation in this problem? A. Higher the algebra score, higher is the score in statistics. B. Higher the algebra score, lower is the score in statistics. C. Lower the algebra score, lower is the score in statistics. D. No meaningful conclusion can be made. 3. In order to obtain the line of best fit to predict peak flow rate (l/min) based on height of a person (in cm), the slope is calculated as 4.5 and the intercept as -153.9. What would be the predicted peak flow rate in l/min for a person who is 160 cm tall? A. 24628.5 B. -24619.5 C. 873.9 D. 566.1
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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1. It was found that the mean scores in algebra (X) and statistics (Y) for a group of students are 80 and 71.72222 and the corresponding standard deviations are 13.39 and 13.08. If the correlation coefficient is approximately -0.5, what could be a likely equation of the equation of best fit?
A. y = 110.65 + 0.49 x
B. y = 110.65 - 0.49 x
C. y = 110.65 x + 0.49
D. y = 110.65 x - 0.49
2. How do you interpret the correlation in this problem?
A. Higher the algebra score, higher is the score in statistics.
B. Higher the algebra score, lower is the score in statistics.
C. Lower the algebra score, lower is the score in statistics.
D. No meaningful conclusion can be made.
3. In order to obtain the line of best fit to predict peak flow rate (l/min) based on height of a person (in cm), the slope is calculated as 4.5 and the intercept as -153.9. What would be the predicted peak flow rate in l/min for a person who is 160 cm tall?
A. 24628.5
B. -24619.5
C. 873.9
D. 566.1
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