\(\(<< Statistics`LinearRegression`
data
        \  = {{0, 	10, 	0, 	0, 	0.0517}, 
{0, 	30, 	0, 	0, 	0.156}, 
        
{0.015, 	10, 	0.5, 	0.3, 	0.621}, 
        
{0.015, 	30, 	0.5, 	0.3, 	0.669}, 
        
{0.03, 	20, 	0.5, 0.3, 	1.242}, 
        
{0.03, 	20, 	1, 	0.3, 	1.581}, 
        
{0.03, 	20, 	0, 	0.6, 	2.275}, 
        
{0.03, 	20, 	1, 	0.6, 	2.581}, 
        
{0.03, 	20, 	2, 	0.6, 	3.167}, 
        
{0.03, 	20, 	2, 	1.2, 	5.237}, 
        
{0.03, 	30, 	1, 	0.3, 	1.592}, 
        
{0.05, 	20, 	0.5, 	0.3, 	2.046}, 
        
{0.05, 	20, 	1, 	0.3, 	2.583}, 
        
{0.05, 	20, 	1, 	0.6, 	4.262}, 
        
{0.05, 	20, 	2, 	0.6, 	5.199}, 
        
{0.05, 	20, 	2, 	1.2, 	8.534}}; 

    Regress[data, {x1, x2, x3, x4}, {x1, x2, x3, x4, y}]
\)\)