Table 2: Tool recognition versus computational test.

(a)

Regression statistics Multiple R 0.289 R Square 0.083 Adjusted R square 0.073 Standard error 14.298 Observations 88.000

(b)

ANOVA df SS MS F Significance F Regression 1.000 1599.318 1599.318 7.824 0.006 Residual 86.000 17580.196 204.421     Total 87.000 19179.513

(c)

Coefficients Standard error t stat P value Intercept 63.105 3.521 17.922 0.000 Computational test 0.269 0.096 2.797 0.006