Table 1.

Means and correlation matrix for the parametric regressors (n = 240 items, variances in the main diagonal)

	dist10	logdist10	dist	logdist	size
dist10	391
logdist10	0.97	0.09
dist	0.98	0.95	377
logdist	0.95	0.96	0.97	0.08
size	-0.03	-0.05	-0.03	-0.05	652
mean	36.63	1.48	36.72	1.49	118.43

dist10: decade distance, logdist10: base-10 logarithm of decade distance, dist: overall distance, logdist: base-10 logarithm of overall distance, size: problem size