The following table illustrates the regression results from regressing monthly IBM excess returns on monthly S&P 500 excess returns. Regression Statistics Multiple R 0.517 R Square 0.268 Adjusted R Square 0.264 Standard Error 0.080 Observations 180.000 ANOVA F 65.085 Significance F 0.000 Regression Residual Total df 1.000 178.000 179.000 MS 0.422 0.006 SS 0.422 1.153 1.575 Intercept Excess Market Coefficients 0.001 1.120 Standard Error 0.006 0.139 t Stat 0.237 8.068 P-value 0.813 0.000 What is the estimated correlation between excess IBM and market returns