Table 5.

Analysis of CCD for xylanase activity

	Coefficients	Standard error	t-Stat	p-value
Intercept	243.0467	41.5702	5.846657	0.000245
X1	−121.621	23.62163	−5.14873	0.000604
X2	13.42214	5.499399	2.440655	0.037324
X3	6.255342	4.139276	1.511216	0.16502
X12	14.60489	5.164777	2.827786	0.019794
X22	0.052727	0.230607	0.228645	0.824256
X32	−0.07528	0.135151	−0.55697	0.591127
X1X2	−4.42794	1.907266	−2.32162	0.045365
X1X3	1.749367	1.287861	1.358351	0.207422
X2X3	−0.18782	0.295456	−0.63568	0.540807