Type	Variable	Unnormalized Coefficient	t	p value	Variable	Unnormalized Coefficient	t	p value
High Potassium	SiO₂	2.114	4.625	0.000	CuO	1.931	2.589	0.019
	Na₂O	−4.941	−7.237	0.000	PbO	−1.522	−1.665	0.113
	K₂O	−0.572	−1.317	0.205	BaO	−0.886	−0.855	0.404
	CaO	−0.240	−0.586	0.565	P₂O₅	0.487	0.617	0.545
	MgO	1.222	2.077	0.052	SrO	0.123	0.200	0.844
	Al₂O₃	0.501	1.225	0.225	SnO₂	0.398	0.389	0.702
	Fe₂O₃	0.960	1.174	0.256	SO₂	0.424	0.532	0.601
Lead Barium	SiO₂	−1.008	−5.422	0.000	CuO	0.414	0.830	0.411
	Na₂O	−1.896	−2.778	0.008	PbO	0.572	3.032	0.004
	K₂O	−1.031	−2.282	0.027	BaO	−0.566	−1.132	0.263
	CaO	0.986	2.509	0.016	P₂O₅	2.339	4.062	0.000
	MgO	−0.411	−0.685	0.497	SrO	0.626	1.717	0.093
	Al₂O₃	−0.612	−3.477	0.001	SnO₂	−0.249	−0.781	0.439
	Fe₂O₃	0.236	0.376	0.709	SO₂	0.600	1.091	0.281