Model Summary

S R-sq R-sq(adj) R-sq(pred)

13.6296 79.08% 77.81% 74.01%

Coefficients

Term Coef SE Coef T-Value P-Value VIF

Constant 8.6 15.8 0.55 0.588

June, july temp anomaly -6.77 1.03 -6.59 0.000 1.01

trend yields 0.913 0.112 8.18 0.000 1.01

Regression Equation

Illini yield 1980-2015 = 8.6 - 6.77 June, july temp anomaly + 0.913 trend yields

Fits and Diagnostics for Unusual Observations

Illini yield

Obs 1980-2015 Fit Resid Std Resid

8 132.00 103.12 28.88 2.22 R

33 105.00 129.85 -24.85 -2.14 R X

R Large residual

X Unusual X