Skip to main content

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   
  1. * p < .05; *** p < .001