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Temperature and Atmospheric Pressure Regression Calculation Guide

Learn how to calculate linear regressions for temperature and atmospheric pressure on calculators. Follow step-by-step instructions to find the regression equation and correlation coefficient for accurate data analysis.

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Temperature and Atmospheric Pressure Regression Calculation Guide

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  1. Temperature 10 15 20 25 30 Atmospheric Pressure 1003 1005 1010 1011 1014 Calculating Linear Regressions (y = ax + b) on Calculators Correlation Coefficient: 0.982607368 • For ‘LeWorld’, DIGITZ’: • Enter MODE3 “REG” • Enter MODE1 “Lin” • Enter 10,1003 and press M+. (Separate x an y with the comma key.) • Repeat step 3 for other 4 data points. • Press ‘SHIFT”, 2 for “S-VAR” • Move cursor twice to the right and choose 3 to find r and press enter.

  2. Temperature 10 15 20 25 30 Atmospheric Pressure 1003 1005 1010 1011 1014 Calculating Linear Regressions (y = bx + a) on Calculators Equation of regression line: y = 0.56x + 997.4 • For ‘LeWorld’, DIGITZ’: • Enter MODE3 “REG” • Enter MODE1 “Lin” • Enter 10,1003 and press M+. (Separate x an y with the comma key.) • Repeat step 3 for other 4 data points. • Press ‘SHIFT”, 2 for “S-VAR” • Move cursor twice to the right and choose 2 to find b and press enter. • Repeat steps 5 and 6 except choose 1 to find a and press enter.

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