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Table 7 One-way ANOVA comparison of detected heavy metal contaminants in the study area

From: Iron, manganese, cadmium, chromium, zinc and arsenic groundwater contents of Agbor and Owa communities of Nigeria

Metals		Sum of squares	df ^a	Mean Square	F ^b	P-value
Fe	Between group	0.0063	2	0.0032	38.4	0.00001
	Within group	0.0010	12	0.000083
	Groups total	0.0073	14
Mn	Between group	0.000252	2	0.000126	16.0	0.0004
	Within group	0.000100	12	0.000008
	Groups total	0.000352	14
Zn	Between group	0.001158	2	0.000599	217.8	0.0
	Within group	0.000033	12	0.00000275
	Groups total	0.001191	14

P < 0.05 ^aDegree of freedom ^bFactor.

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