Table 4 Descriptive statistics of quality indicator for calibration and prediction set.

From: Prediction of Congou Black Tea Fermentation Quality Indices from Color Features Using Non-Linear Regression Methods

Parameters

CV

Calibration set

Prediction set

N

Range

Mean

sda

N

Range

Mean

sda

TFs

0.251

150

0.279~0.723

0.466

0.117

70

0.289~0.719

0.496

0.122

TRs

0.121

150

3.570~5.500

4.527

0.542

70

3.580~5.520

4.665

0.579

TBs

0.144

150

4.939~8.292

6.999

0.992

70

4.949~8.282

6.819

1.026

Sensory score

0.063

150

67.10~88.120

81.604

5.098

70

67.230~88.110

80.821

5.233

  1. aStandard deviation.
Back to article page