APPENDIX B: Single factor Anova on the three graded-shading cases

  case 4 case 5 case 6      
Subject 1 67 117 55      
Subject 2 31 49 43      
Subject 3 67 61 55      
Subject 4 75 62 52      
Subject 5 83 54 26      
Subject 6 56 42 41      
Subject 7 32 26 27      
Subject 8 64 53 34      
Subject 9 59 36 47      
Subject 10 33 37 33      
Subject 11 54 33 25      
Subject 12 39 58 33      
Subject 13 33 22 18      
             
Anova: Single Factor            
SUMMARY            
Groups Count Sum Average Variance    
Column 1 13 693 53.30769 321.8974    
Column 2 13 650 50 576.8333    
Column 3 13 489 37.61538 148.9231    
             
ANOVA            
Source of Variation SS df MS F P-value F crit
Between Groups 1779.128 2 889.5641 2.547303 0.092325 3.259444
Within Groups 12571.85 36 349.2179      
             
Total 14350.97 38