Regression methods were used to analyze the data from a study investigating the relationship between roadway surface temperature (x) and pavement deflection ( y). The data follow. Temperature Deflection Temperature Deflection xyxy 70.0 0.621 72.7 0.637 77.0 0.657 67.8 0.627 72.1 0.640 76.6 0.652 72.8 0.623 73.4 0.630 78.3 0.661 70.5 0.627 74.5 0.641 72.1 0.631 74.0 0.637 71.2 0.641 72.4 0.630 73.0 0.631 75.2 0.644 72.7 0.634 76.0 0.639 71.4 0.638