Optimization of Polygalacturonase Production from a Newly Isolated Thalassospira frigidphilosprofundus to Use in Pectin Hydrolysis: Statistical Approach

Table 8

Model of coefficient estimated by multiple linear regression.

Source	Coefficient estimate	df	SE	Student’s t-value	P value
Constant	24.753	1	0.3396	72.894	0.000
𝜒1	−0.185	1	0.1698	−1.092	0.292
𝜒2	0.952	1	0.1698	5.607	0.000
𝜒3	−0.662	1	0.1698	−3.899	0.001
𝜒6	−0.914	1	0.1698	−5.382	0.000
𝜒^21	−1.634	1	0.1588	−10.291	0.000
𝜒^22	0.408	1	0.1588	2.569	0.021
𝜒^23	−0.392	1	0.1588	−2.468	0.026
𝜒^26	−0.224	1	0.1588	−1.413	0.178
𝜒1𝜒2	0.109	1	0.2079	0.526	0.607
𝜒1𝜒3	0.971	1	0.2079	4.668	0.000
𝜒1𝜒6	−0.107	1	0.2079	−0.514	0.615
𝜒2𝜒3	0.517	1	0.2079	2.486	0.025
𝜒2𝜒6	−0.023	1	0.2079	−0.111	0.913
𝜒3𝜒6	−0.044	1	0.2079	−0.213	0.834