Table 9.

Results of One-way ANOVA of the PCPs Commonly Used in Ibadan.

		Sum of Squares	df	Mean Square	F	Sig.
Zn	Between Groups (Combined)	976178850.386	2	488089425.193	1.395	0.262
	Within Groups	11195583174.114	32	349861974.191
	Total	12171762024.500	34
Cd	Between Groups (Combined)	91.420	2	45.710	1.237	0.304
	Within Groups	1182.159	32	36.942
	Total	1273.579	34
Pb	Between Groups (Combined)	16247.295	2	8123.648	1.235	0.304
	Within Groups	210456.935	32	6576.779
	Total	226704.231	34
Ni	Between Groups (Combined)	936.719	2	468.360	1.492	0.240
	Within Groups	10047.191	32	313.975
	Total	10983.910	34