Quantitative Analysis of Electroplated Nickel Coating on Hard Metal

Table 2

Analysis of variance of the coating thickness model.

Source	Sum of square	Degree of freedom	Mean square	𝐹 value	Prob > 𝐹
Model	383.35	2	191.67	66.27	<0.05
Gap distance	123.10	1	123.10	42.63	<0.05
Plating time	260.04	1	260.04	89.91	<0.05
Residual	17.35	6	2.89
Pure error		0
Cor total	400.70	8