Study on the Modification Formula of Earth Material Compound with Cement and Gravel by Single Lattice Theory

Table 11

Estimation of the partial regression coefficient of y₂ regression equation for peak displacement of mixed cement and gravel modified with raw soil.

Regression term	Partial regression estimation	t-test		Regression error of partial regression estimation
x1	3.6	36.85	0.0001	0.098
x2	3.08	31.57	0.0001	0.097
x3	4.04	41.38	0.0001	0.097

Combining regression equation y₂, solving the equation  = 4.11,  = 2.97, range  = 1.14,  = 3.57, gradient  = 0.1, using Mathcad software, the results of equation y₂ are shown in Table 12.