Contemplated Investigation and Statistical Prediction of the Swelling Potential of Expansive Soils Using Index Properties of Holte Town, Southern Ethiopia

Table 4

Multiple regression analysis for swelling potential, Sp with SPSS.

Equations	r	R^2	Adj. R^2	Std. error	value	CL (%)
Sp = 9.197 γd + 0.129LL − 15.342	0.830	0.689	0.666	0.6156	0.0110	98.9
Sp = 6.876 γd + 0.178PI − 10.664	0.949	0.900	0.892	0.3497	0.00167	99.99
Sp = 0.001w + 0.158LL − 5.917	0.794	0.630	0.602	0.6719	0.0339	66.10
Sp = −0.024w + 0.197PI − 1.988	0.933	0.871	0.861	0.3969	0.1280	87.20
Sp = 0.199PI + 0.005C − 3.199	0.930	0.866	0.856	0.4049	0.4655	53.45
Sp = 15.1326 γd + 0.82C − 23.462	0.758	0.574	0.543	0.7208	0.0013	99.99
Sp = 23.7696 γd + 0.249%P200 − 48.281	0.748	0.560	0.527	0.7328	0.001	99.99
Sp = 9.7888 γd + 0.161PI + 0.109%P200 − 24.014	0.964	0.930	0.922	0.2979	0.0005	99.95
Sp = 7.771 γd + 0.229PI − 0.005LL − 9.984	0.956	0.915	0.905	0.3286	0.0106	98.94
Sp = 6.876 γd + 0.176PI − 0.005C − 10.887	0.949	0.900	0.888	0.3562	0.2193	78.07
Sp = 10.098 γd + 0.177PI + 1.401LI − 14.847	0.956	0.914	0.904	0.3296	0.0118	98.82
Sp = 15.988 γd − 0.136PL + 0.202C − 21.588	0.816	0.665	0.627	0.6512	0.0033	99.67
Sp = 0.02C + 0.189PI − 0.28w − 2.574	0.934	0.872	0.857	0.4024	0.2483	75.17
Sp = 9.89 γd + 0.193PI + 0.094%P200 − 0.032LL − 21.734	0.967	0.934	0.924	0.2941	0.0442	95.58
Sp = 0.248C − 0.149PL + 0.220%P200 − 0.227w − 16.656	0.850	0.723	0.679	0.6042	0.0138	98.62