Table 12: One way analysis of variance for concrete density.

Source of Variation	SS	df	MS	F	P-value	F crit
Between Groups	21656.89	5	4331.378	7.338145	0.002303	3.105875
Within Groups	7083.062	12	590.2551	-	-	-
Total	28739.95	17	-	-	-	-