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Find the line that best fit for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class. Final grade y (%) Number of Student absences x xy A 6. 82 492 36 6,724 7,396 1,849 5,476 2 86 A 4 15 43 645 225 74 666 81 E 12 58 696 450 144 90 8,100 6,084 F 5 25 8. 78 624 64 Ex = 57 Ey = 511 Exy = C Ex? = 579 Ey? = : (Ey)(Ex?) – (Ex)(Exy) n(Ex?) – (Ex)? Σεν) -(Σ) (Σν) n(Ex?) – (Ex)² y' = a + bx

Find the line that best fit for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class. Final grade y (%) Number of Student absences x xy A 6. 82 492 36 6,724 7,396 1,849 5,476 2 86 A 4 15 43 645 225 74 666 81 E 12 58 696 450 144 90 8,100 6,084 F 5 25 8. 78 624 64 Ex = 57 Ey = 511 Exy = C Ex? = 579 Ey? = : (Ey)(Ex?) – (Ex)(Exy) n(Ex?) – (Ex)? Σεν) -(Σ) (Σν) n(Ex?) – (Ex)² y' = a + bx

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 3GP
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Find the line that best fit for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class. Final grade y (%) Number of Student absences x ху y? 6,724 7,396 1,849 5,476 В A 6. 82 492 A 36 B 86 4 15 43 645 225 D 74 666 81 E 12 58 696 144 450 8,100 6,084 F 5 90 25 8 78 624 64 Ex = 57 Ey = = 511 Exy = Ex? = 579 Ey = : (Ey)(Ex²) – (Ex)(Exy) n(Ex?) – (Ex)² a = Σχν)-(Σx) (Σν) . n(Ex?) – (Ex)² b = a + bx A В D a b : 172 :: 3,745 : 3,364 : 38,993 :: 39,883 :: 465 :: 102.493 : -3.622 :: -6.332
Transcribed Image Text:Find the line that best fit for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class. Final grade y (%) Number of Student absences x ху y? 6,724 7,396 1,849 5,476 В A 6. 82 492 A 36 B 86 4 15 43 645 225 D 74 666 81 E 12 58 696 144 450 8,100 6,084 F 5 90 25 8 78 624 64 Ex = 57 Ey = = 511 Exy = Ex? = 579 Ey = : (Ey)(Ex²) – (Ex)(Exy) n(Ex?) – (Ex)² a = Σχν)-(Σx) (Σν) . n(Ex?) – (Ex)² b = a + bx A В D a b : 172 :: 3,745 : 3,364 : 38,993 :: 39,883 :: 465 :: 102.493 : -3.622 :: -6.332
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