BUCHI NIRCal User Manual

Page 161

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Chemometrics

NIRCal 5.5 Manual, Version A

161

Row

Name

Description

Statistics of the original property values (labor method, X-axis)

98

C-Set Orig. min.

The smallest property value in the C-Set

99

C-Set Orig. max.

The highest property value in the C-Set

100

C-Set Orig. mean.

The mean property value of the C-Set

101

C-Set Orig. sdev

The standard deviation of the property values in the C-Set

103-
106

C-Set Pred.

Statistics of the predicted property values (NIR, Y-axis). These
values should be comparable to the similar values of the original
property values.

108

C-Set RSS

C-Set residual sum of squares = RSS should be low:
Sum((Orig-Predicted property)^2) = Sum (e^2)

110

C-Set Durbin-Watson

dw=Durbin-Watson = Sum of consecutive/succesive Residual
Difference Square / Sum of Residual Square LINK:

Durbin-

Watson Factor Statistics

111

C-Set Durbin-Watson in
range 1.5 to 2.5

Is the dw value between 1.5 and 2.5? Answer: Yes or No

113

C-Set Resid. min

Biggest negative deviation in the C-Set property values

114

C-Set Resid. max

Biggest positive deviation in the C-Set property values

117

C-Set n

Number of C-Set spectra


Result of the final calibration

121-
190

Validation for C-Set
Spectra

Name, number of spectrum, original, predicted property and the
difference (Orig-Pred); an X for "extrapolation", in case the value
is outside the calibration range; residual value and an X for
"redidual too big", in case the value is outside the allowed range;
spectrum GUID

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