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When you solve and get an r value for the correlation coefficient, what information is revealed by this value?

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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Question

When you solve and get an r value for the correlation coefficient, what information is revealed by this value?

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

We know that

Correlation measures tye association between the two variables.

If two variables move in same direction then correlation is positive

And if two variables move in opposite direction then correlation is negative.

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