Table 4.

Significant dieback angle relationships.

Equation 10yDieback angle (live oak) = 13.3 + 0.735 angle of cut r2 = 0.611, regression model P < 0.001
Equation 11zDieback angle (shumard oak) = 18 + 0.667 angle of cut r2 = 0.276, regression model P < 0.001 (one outlying datum removed)
Equation 12zDieback angle (shumard oak) = 27 + 0.798 angle of cut − 2.24 initial cut diameter r2 = 0.356, regression model P < 0.001

  • ↵zConfidence intervals at α = 0.05 reject zero slope line in scatterplot.

  • ↵yPrediction intervals at α = 0.05 reject zero slope line in scatterplot.