Quantification of Uncertainty in Mathematical Models: The Statistical Relationship between Field and Laboratory pH Measurements

Table 3

Model parameters (rounded to three significant figures) for the linear model of field pH against lab pH using both the least squares and Pearson index for the quantised and randomised data.

Model fit	Quantised		Randomised
	Least squares	Pearson index	Least squares	Pearson index
r^2	0.774	0.772	0.764	0.763
	8033	7954	7608	7543
p	<0.00001	<0.00001	<0.00001	<0.00001
Fit s.e.	0.643	0.646	0.657	0.659
a	0.351	0.099	0.414	0.171
b	0.933	0.965	0.924	0.955