A multiple regression analysis produced the following output from Minitab.

Regression Analysis: Y versus x1and x2

PredictorCoef

SE Coef

T

P

Constant-0.06260.2034-0.310.762x11.10030.54412.020.058x2-0.89600.5548-1.610.124

S = 0.179449

R-Sq = 89.0%

R-Sq(adj) = 87.8%

Analysis of Variance

SourceDF

SS

MS

F

P

Regression24.70132.350673.000.000Residual Error180.57960.0322Total205.2809

The overall proportion of variation of y accounted by x1and x2is _______

0.5441

0.89

0.179

0.203

0.878