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Table 3 Statistical analysis of Plackett-Burman design showing coefficient values, t -value and P -value for each variable

From: Characterization of Actinomycetes and Trichoderma spp. for cellulase production utilizing crude substrates by response surface methodology

Variable

Coefficient

t-value

P value

Intercept

1.08

12.7062

0.0049*

CMC

0.24

12.7062

0.0024*

WB

−0.15

4.30265

0.0037

RC

0.025

3.18245

0.0249

Peptone

0.12

2.77645

0.0049*

pH

0.17

2.57058

0.0033*

MgSO4

−0.099

2.44

0.0057

KH2PO4

0.18

2.36462

0.0031*

  1. *Significant factors.