Finding Values for Least Squares Regression Line in TI 84 Graphing Calculator

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This video shows how to find the values for the least squares regression line in a TI-84 graphing calculator.
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hi, I know this posted a year ago, but I am getting an error message when hit enters to calculate. I did exactly what you did and a double checked I imputed right. Do you know why or how I can fix this issue? Thanks.

marybarukh
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when I searched up a video for the regression line it has the same exact steps as least-squares regression line. Are they always the exact same then because I thought they would be different

quanz
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how are you getting the r and r^2 values? mine only shows the a and b values

ryanrutar