Answered: which one is correlation coefficient

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which one is correlation coefficient

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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3 -

x and

23 ; 88

76 ; 305

27 ; 105

64 ; 240

12 ; 50

51 ; 205

33 ; 120

50 ; 104

When regression analysis is performed according to the given x and y values (y = ax + b), which one is correlation coefficient

0.9291

B)	hiçbiri/none of them

-0,997

-0,6790

0,2421

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

Expert Solution

Step 1

From the given sample data :

n=8 , ƩX=336 , ƩY=1217 , ƩX²=17464 , ƩY²=239135 , ƩXY=63614

Our aim is to find the correlation coefficient.

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