Table 3.

Statistical description of the data set used for modeling.

Parameters	Pwh (psi)	GLR (SCF/STB)	D (1/64) in	Qliq (STB/Day)
Mean	1594.699	1084.637	53.133	8146.613
Standard Error	39.798	35.917	0.552	184.404
Median	1500.000	915.000	54.000	8000.000
Mode	2400.000	1040.000	64.000	9280.000
Standard Deviation	945.988	853.733	13.117	4383.228
Sample Variance	894,894.137	728,860.845	172.060	19,212,685.885
Kurtosis	− 1.098	6.010	− 0.455	1.006
Skewness	0.222	1.691	− 0.358	0.760
Minimum	50.000	36.000	16.000	205.000
Maximum	4045.000	5706.600	80.000	25,878.000