1. Calculating Linear Regressions (y = ax + b) on Calculators
Temperature
Atmospheric Pressure 10
1003 15
1005 20
1010 25
1011 30
1014
Correlation Coefficient:
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.

2. 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
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.