International Journal of Interdisciplinary Research
Table 3 Three-way analysis of variance for stain removal
From: Comparisons of fabric care performances between conventional and high-efficiency washers and dryers
Stain removal | Sum of squares | df | Mean square | F |
|---|---|---|---|---|
Main effects | 285.27 | 35 | 8.15 | 38.91*** |
Combination of washer and dryer (W/D) used | .37 | 2 | .18 | .87 |
Softener usage | .20 | 1 | .20 | .94 |
Number of laundering cycles | 277.27 | 5 | 55.45 | 264.74*** |
Combination of W/D used × softener | 1.62 | 2 | .81 | 3.88* |
Combination of W/D used × cycles | 3.11 | 10 | .31 | 1.48 |
Softener × cycles | .63 | 5 | .13 | .60 |
Combination of W/D used × softener × cycles | 2.08 | 10 | .21 | .99 |
Error | 30.16 | 144 | .21 | |
Total | 1497.66 | 180 |