Calculating Linear Regressions (y = ax + b) on Calculators

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Presentation transcript:

Calculating Linear Regressions (y = ax + b) on Calculators Temperature Atmospheric Pressure 10 1003 15 1005 20 1010 25 1011 30 1014 Correlation Coefficient: 0.982607368 For ‘SHARP EL-520W’: Enter MODE1 “STAT” Enter 1 “LINE” Enter 10,1003 and press M+. (Separate x an y with the comma ”STO” key.) Repeat step 3 for other 4 data points. Press ‘ALPHA”, “÷” for ‘r’ and then press enter.

Calculating Linear Regressions (y = bx + a) on Calculators Temperature Atmospheric Pressure 10 1003 15 1005 20 1010 25 1011 30 1014 Equation of regression line: y = 0.56x + 997.4 For ‘SHARP EL-520W’: Enter MODE1 “STAT” Enter 1 “LINE” Enter 10,1003 and press M+. (Separate x an y with the comma ”STO” key.) Repeat step 3 for other 4 data points. Press ‘ALPHA”, “)” for ‘b’ and then press enter. Press ‘ALPHA”, “(” for ‘a’ and then press enter.