Magnitude of Construction Cost and Schedule Overruns in Public Work Projects

Table 8

ANOVA results, construction cost and schedule overruns by project size.

Project types	Unit	Mean	𝐹-value	𝑃-value	𝐹-critical
Construction cost overrun
Less than $1 million	%	1.67	4.212	0.016*	3.020
$1 million to $5 million	%	3.55
Greater than $5 million	%	3.92
Construction schedule overrun
Less than $1 million	%	−11.23	16.538	<0.001**	3.020
$1 million to $5 million	%	4.99
Greater than $5 million	%	14.35

∗Statistically significant at alpha level 0.05.
∗∗Statistically significant at alpha level 0.01.