Analytical Validation of Smartphone Spectroscopic Technic Used in an Educational Kinetic Study

Table 3

Fisher test for the linearity of the method.

Concentrations (mol·L^−1)	A1	A2		A3
0.00005	0.051	0.049		0.059	Slope a1 = 1000
0.00010	0.095	0.102		0.107
0.00020	0.201	0.191		0.211	Intercept a0 = 0.002
0.00030	0.302	0.310		0.298
0.00040	0.406	0.399		0.401	Correlation coef. r^2 = 0.9999
FTab = 3.7		0.03
Decision
If			The model is linear
If			The model is not linear
Conclusion
Calibration model is linear