Finding Values for Least Squares Regression Line in TI 83 Graphing Calculator

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This video shows how to find the "a" and "b" values for the least squares regression line in a TI-83 graphing calculator.
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thank you so much for saving my life!!! 😁😁😁

chandlerbontrager
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After pressing 8 for linear regression, and then pressing enter one more time, instead of showing the equation of the line and all that it says error. what am i doing wrong?

ivymcdermott