Research Article

Developing an Integrative Data Intelligence Model for Construction Cost Estimation

Table 2

Descriptive measures of the cost data for the testing phase.

MinimumMaximumMeanMedianStd. deviationSkewnessKurtosis

Ground floor area (m2)239394014901394882.4140.9910.713
Total floor area (m2)3449800408638402692.4330.384−1.068
Floor number163.22231.6250.483−1.089
Elevator number041.3711.1820.501−0.936
Footing type (raft = 1; separated = 2)
Inflation (%)0.17.53.3192.12.6740.297−1.474
Duration (days)150787404.7364177.0360.468−0.770
Cost ($)16014761048782571431221540219401520.409−1.345