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X: # of hours studying Y: # of correct answers N=6 EX=33 ΣΥ = 88 EX2=223 ΣXY = 521 If you plug the numbers in the formula: Subjects 1 2 3 4 5 6 X 4 8 1 5 9 6 13 17 11 14 18 15

X: # of hours studying Y: # of correct answers N=6 EX=33 ΣΥ = 88 EX2=223 ΣXY = 521 If you plug the numbers in the formula: Subjects 1 2 3 4 5 6 X 4 8 1 5 9 6 13 17 11 14 18 15

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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since formula is given，need help to find a-yx，the y intercept
Example Question 1 X: # of hours studying Y: # of correct answers N=6 EX=33 Σ Υ = 88 EX2=223 EXY=521 If you plug the numbers in the formula: Subjects 1 2 3 4 5 6 4 8 1 5 9 6 Y 13 17 11 14 18 15
Transcribed Image Text:Example Question 1 X: # of hours studying Y: # of correct answers N=6 EX=33 Σ Υ = 88 EX2=223 EXY=521 If you plug the numbers in the formula: Subjects 1 2 3 4 5 6 4 8 1 5 9 6 Y 13 17 11 14 18 15
Regression Constants and Line Formulas for the slope (b) and y-intercept (a): The slope (b) needs to be computed first in order to find the y-intercept. yx Y₁ = byx-X + ayx Y'=bX+a ΝΣΑΥ -(ΣΑΣ) ΝΣΥ - (Σ.Υ) @-F-bX = yx
Transcribed Image Text:Regression Constants and Line Formulas for the slope (b) and y-intercept (a): The slope (b) needs to be computed first in order to find the y-intercept. yx Y₁ = byx-X + ayx Y'=bX+a ΝΣΑΥ -(ΣΑΣ) ΝΣΥ - (Σ.Υ) @-F-bX = yx
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