Determination of Optimum Conditions for the Production of Activated Carbon Derived from Separate Varieties of Coconut Shells

Table 12

Statistical analysis of model.

Item measured	Optimization (tall); Figure 6(b)(i)	Optimization (dwarf) Figure 6(b)(ii)	Optimization (tall); Figure 6(c)(i)	Optimization (dwarf) Figure 6(c)(ii)
Standard error	6.796	2.7353	5.769	14.334
95% confidence interval	21.625	8.7037	18.36	45.611
99% confidence interval	39.696	15.977	33.69	83.725
Standard deviation	13.592	5.4706	11.54	28.668
Coefficient of variation	0.5146	0.3708	0.371	0.5148
Correlation with experiment	0.9559	0.9936	0.994	0.9559