Enhancing Algal Growth by Stimulation with LED Lighting and Ultrasound

Table 6

Analysis of variance for different ratios.

Factors	Sum of square	Degree of freedom	Variance	value	Probability	Confidence level	Significance^*
	5.66	1	5.66	0.90	41.33%	58.67%	No
	13.65	1	13.65	2.16	23.76%	76.24%	Yes
	30.87	1	30.87	4.90	11.38%	88.62%	Yes
	1278.34	1	1278.34	202.74	0.08%	99.92%	Yes
	16.68	1	16.68	2.65	20.23%	79.77%	Yes
	1.80	1	1.80	0.29	63.01%	36.99%	No
	5.27	1	5.27	0.84	42.80%	57.20%	No
Error	18.92	3	6.31
Total	1352.26	10	135.23

Note: at least 75% confidence level.