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3b, 3c, and 3d

3b, 3c, and 3d

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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Can you answer the questions in 3b, 3c, and 3d? Thank you

3. Show manual computation. Refer to the table below. y2 Statistics (x) Calculus (y) ху 30 28 840 900 789 22 32 704 484 1024 27 30 810 729 900 27 33 891 729 1089 29 30 870 84) 900 27 28 756 729 789 27 32 864 729 1024 h98 550 27 32 729 1024 22 25 484 625 28 32 896 784 1024 21 25 525 44) 625 21 30 630 44) go0 28 32 896 784 1024 20 26 520 400 676 29 30 870 900 a) What is the correlation coefficient? Interpret the result. η Σxy- (Εx) (2) Vnz x2 - (Zx)? /nzyz-(Ey)? 15 (1486) - (385)(445) r= V15 ( 1004s) - (385) /15 (13363) - (445)2 915 ( 351) (4/45) r= 0. 50006041 53 b) What is the best fit line that best describes the above data?
Transcribed Image Text:3. Show manual computation. Refer to the table below. y2 Statistics (x) Calculus (y) ху 30 28 840 900 789 22 32 704 484 1024 27 30 810 729 900 27 33 891 729 1089 29 30 870 84) 900 27 28 756 729 789 27 32 864 729 1024 h98 550 27 32 729 1024 22 25 484 625 28 32 896 784 1024 21 25 525 44) 625 21 30 630 44) go0 28 32 896 784 1024 20 26 520 400 676 29 30 870 900 a) What is the correlation coefficient? Interpret the result. η Σxy- (Εx) (2) Vnz x2 - (Zx)? /nzyz-(Ey)? 15 (1486) - (385)(445) r= V15 ( 1004s) - (385) /15 (13363) - (445)2 915 ( 351) (4/45) r= 0. 50006041 53 b) What is the best fit line that best describes the above data?
15 (1486) - (385)(45) r= V15 ( 10045) - (3 85)i /15 (13302) - (445)a 945 ( 351) (445) r= 0.50006041 53 b) What is the best fit line that best describes the above data? c) Using the regression line at (b), what would be the score of a student in calculus if the student got 19 in statistics? d) using the regression line at (b), what would be the score of a student in statistics if the score in calculus is 23?
Transcribed Image Text:15 (1486) - (385)(45) r= V15 ( 10045) - (3 85)i /15 (13302) - (445)a 945 ( 351) (445) r= 0.50006041 53 b) What is the best fit line that best describes the above data? c) Using the regression line at (b), what would be the score of a student in calculus if the student got 19 in statistics? d) using the regression line at (b), what would be the score of a student in statistics if the score in calculus is 23?
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