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Table 5 Paired sample t test comparison of absolute value of errors obtained using \(PRM({\widehat{\overline{D}}\widehat{D}}_{\mathrm{g}})\) and \(PRM({{\widehat{D}}_{\mathrm{o}}\widehat{D}}_{\mathrm{g}})\) for \(dbh\) classes. Differences between absolute value of errors are obtained subtracting the absolute value of the errors for \(PRM({{\widehat{D}}_{\mathrm{o}}\widehat{D}}_{\mathrm{g}})\) to the absolute value of the errors for \(PRM({\widehat{\overline{D}}\widehat{D}}_{\mathrm{g}})\). Negative values indicate that errors in \(PRM({{\widehat{D}}_{\mathrm{o}}\widehat{D}}_{\mathrm{g}})\) are larger than those in \(PRM({\widehat{\overline{D}}\widehat{D}}_{\mathrm{g}})\). \(\overline{D}:\) mean diameter, \({D}_{\mathrm{o}}\): dominant diameter, \({D}_{\mathrm{g}}\): quadratic mean diameter and \(N:\) stand density. \(\widehat{\overline{D}}\), \({\widehat{D}}_{\mathrm{o}}\) and \({\widehat{D}}_{\mathrm{g}}\) represent predictions of \(\overline{D}, {D}_{\mathrm{o}}\) and \({D}_{\mathrm{g}}\) obtained from the yield table models

From: Comparison of two parameter recovery methods for the transformation of Pinus sylvestris yield tables into a diameter distribution model

\(dbh\) class (cm)

\(dbh\) \(\epsilon\) (5,20)

\(dbh\) \(\epsilon\) (20,30)

\(dbh\) \(\epsilon\) (30,40)

\(dbh\) \(\epsilon\) (40,50)

\(dbh\) \(\epsilon\) (50,60)

\(dbh\) \(\epsilon\) (60,70)

\(dbh\) \(\epsilon\) (70,80)

\(dbh\) \(>\) 80

All \(dbh\) classes

Mean difference between errors in absolute value

1.80E-3

− 1.64E-2

− 5.69E-3

− 4.43E-3

1.11E-03

3.61E-4

− 5.84E-6

− 7.71E-8

− 2.91E-3

p value

5.72E-1

1.23E-4

3.56E-2

7.46E-4

4.93E-2

2.67E-3

6.72E-1

3.39E-1

1.83E-4