. 2019 May 9;9(6):207. doi: 10.1007/s13205-019-1733-5

Table 2.

Linear and quadratic equation of examined substances

Substance	Linear equation (p)	Quadratic equation (p)	R ²	Mandel^’s test (p)	Shapiro–Wilk test (p)	Durbin–Watson test	Bartlett test (p)
Bifonazole	P = 8615.9·m + 1184.9 (0.000) (0.000)	P = − 1547.0·m² +10,841.1·m + 682.2 (0.005) (0.000) (0.007)	0.9913*	10.378 (0.0051)	0.940* (0.906)	0.961*	0.159* (0.991)
Clotrimazole	P = 391.1·m + 278.4 (0.000) (0.036)	P = − 0.2510·m² +397.8·m + 252.4 (0.834) (0.000) (0.170)	0.9941	0.045 (0.754)	0.957 (0.603)	0.859	0.043 (0.835)

Substance

Linear equation (p)

Quadratic equation (p)

R ²

Mandel^’s test (p)

Shapiro–Wilk test (p)

Durbin–Watson test

Bartlett test (p)

Bifonazole

P = 8615.9·m + 1184.9

(0.000) (0.000)

P = − 1547.0·m² +10,841.1·m + 682.2

(0.005) (0.000) (0.007)

0.9913*

10.378 (0.0051)

0.940*

(0.906)

0.961*

0.159* (0.991)

Clotrimazole

P = 391.1·m + 278.4 (0.000) (0.036)

P = − 0.2510·m² +397.8·m + 252.4

(0.834) (0.000) (0.170)

0.9941

0.045 (0.754)

0.957

(0.603)

0.859

0.043 (0.835)

P - peak surface area [mm²], m - mass [μg/spot], R² - coefficient of determination; (p) - p significance

*For quadratic equation