Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The correlation coefficient r is a measure of how well a regression line fits data. The value of r is always between −1 and 1. If the fit is exact, the value of r is 1 or −1. Values of r near zero indicate a poor fit. Most calculators can be set to display the correlation coefficient.†

For the following data set, do the following.

x 2 4 6 8 10
y 6 10 22 18 24

Get the regression line.

y = 
 
 
 



Plot the data and the regression line on the same screen.

   
   


Report the value of the correlation coefficient. (Round your answer to two decimal places.)

r = 
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