Table 6.
Analysis of variance for signal-to-noise ratios of Microhardness.
| Source | DF | Seq SS | Adj MS | F-Value | p-Value | % Contribution |
|---|---|---|---|---|---|---|
| Dielectric type | 1 | 304.897 | 304.897 | 571.58 | 0.000 * | 83.019 |
| Current | 2 | 50.309 | 25.155 | 47.16 | 0.010 * | 13.698 |
| Pulse-on-time | 2 | 5.919 | 2.959 | 5.55 | 0.031 * | 1.612 |
| Pulse-off-time | 2 | 0.142 | 0.071 | 0.13 | 0.877 | 0.038 |
| Voltage | 2 | 1.727 | 0.863 | 1.62 | 0.257 | 0.472 |
| Residual error | 8 | 4.267 | 0.533 | 1.161 | ||
| Total | 17 | 367.261 | 100 |
DF: degrees of freedom; Seq SS: sequential sum of squares; Adj MS: adjusted mean sum of squares, * Significant at 95% confidence level, Rank 1: Dielectric type, Rank 2: Current, Rank 3: Pulse-on-time