Table 2.

Calculation worksheet for analysis of effects, standard deviation and error limits for higher productivity

Effect of variables	Formulae to calculate effects of variables
Glucose	1/6 [X3 + X4 + X5 + X7 + X8 + X9] − [X1 + X2 + X6 + X10 + X11 + X12]
C/N	1/6 [X1 + X3 + X5 + X9 + X11 + X12] − [X2 + X4 + X6 + X7 + X8 + X10]
Agitation	1/6 [X1 + X2 + X7 + X8 + X9 + X11] − [X3 + X4 + X5 + X6 + X10 + X12]
Minerals conc.	1/6 [X4 + X6 + X7 + X9 + X11 + X12] − [X1 + X2 + X3 + X5 + X8 + X10]

X = response, C/N = carbon–nitrogen ratio