Regression methods were used to analyze the data from a study investigating the relationship between roadway surface temperature (x) and pavement deflection (y). Summary quantities were n=20, ∑yi=12.75, ∑yi^2=8.86, ∑xi= 1478, ∑xi^2=143,215.8, and ∑xi yi=1083.67. (a) Calculate the least squares estimates of the slope and intercept. Graph the regression line. Estimate σ^2. (b) Use the equation of the fitted line to predict what pavement deflection would be observed when the surface temperature is
Regression methods were used to analyze the data from a study inve…
Mar 18, 2021
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