Factors | Voltage A [V] | Time B [s] | Empty column | Density C [ends/10cm] | Temperature [°C] |
---|---|---|---|---|---|
Test number | 1 | 2 | 3 | 4 | |
1 | 1 | 1 | 1 | 1 | 4.7 |
2 | 1 | 2 | 2 | 2 | 6.9 |
3 | 1 | 3 | 3 | 3 | 6.4 |
4 | 2 | 1 | 2 | 3 | 5.4 |
5 | 2 | 2 | 3 | 1 | 6.2 |
6 | 2 | 3 | 1 | 2 | 7.6 |
7 | 3 | 1 | 3 | 2 | 6.8 |
8 | 3 | 2 | 1 | 3 | 7.5 |
9 | 3 | 3 | 2 | 1 | 7.1 |
Level Factors | 1 | 2 | 3 |
---|---|---|---|
Voltage [V] | 10 | 12 | 14 |
Time [s] | 240 | 360 | 480 |
Density [ends/10cm] | 4 | 5 | 6 |
Category | Voltage A | Time B | Empty column | Density C |
---|---|---|---|---|
K1j | 6.000 | 5.633 | 6.600 | 6.000 |
K2j | 6.400 | 6.867 | 6.467 | 7.100 |
K3j | 7.133 | 7.033 | 6.467 | 6.433 |
K1j(一) | 2.000 | 1.877 | 2.200 | 2.000 |
K2j(二) | 2.133 | 2.289 | 2.156 | 2.367 |
K3j(三) | 2.377 | 2.344 | 2.156 | 2.144 |
Range Rj | 0.337 | 0.467 | 0.044 | 0.367 |
Main factors→ minor factors | BAC | |||
Optimal scheme | A3 B3 C2 |
Source of variance | Sum of squared deviation Sj | Degrees of freedom fj | Mean square
|
Fj value | Significance |
---|---|---|---|---|---|
A Voltage | 1.982222 | 2 | 0.991111 | 55.7493 | Significant |
B Time | 3.508889 | 2 | 1.754444 | 9.868624 | Significant |
C Density | 1.842222 | 2 | 0.921111 | 5.181185 | Significant |
e Error | 0.035556 | 2 | 0.017778 |