Statistical Analysis for Education and Psychology Researchers

the body of the table then U is

significant at the 0.05 level.

Any value of U for n 1 and n 2 which: i)

is equal to either of the pair of critical

values in the body of the table or ii) is

smaller than the lowest figure in the

pair or larger than the largest figure in

the pair, is significant at the alpha

=0.05 level.

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

2 2 2 2 2 2 2 2 2

-- -- - --- -

3 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3

4 2 2 2 3 3 3 3 3 3 3 3 4 4 4 4 4
9 9 - - - - - - - - - - - - - -
5 2 2 3 3 3 3 3 4 4 4 4 4 4 4 5 5 5
9 10 10 11 11 - - - - - - - - - - - -
6 2 2 3 3 3 3 4 4 4 4 5 5 5 5 5 5 6 6

• 9 10 11 12 12 13 13 13 13 - - - - - - - -
  7 2 3 3 3 4 4 5 5 5 5 5 6 6 6 6 6 6 6


• 
  
  
  
  • 11 12 13 13 14 14 14 14 15 15 15 - - - - -
    8 2 3 3 3 4 4 5 5 5 6 6 6 6 6 7 7 7 7
  
  
  
  


• 
  
  
  
  • 11 12 13 14 14 15 15 16 16 16 16 17 17 17 17 17
    9 2 3 3 4 4 5 5 5 6 6 6 7 7 7 7 8 8 8
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 13 14 14 15 16 16 16 17 17 18 18 18 18 18 18
      2 34567891011 121314151617181920
    
    
    
    
  
  
  
  

10 2334555 6 6 777788889

• 
  
  
  
  • 
    
    
    
    • 13 14 15 16 16 17 17 18 18 18 19 19 19 20 20
      11 2344556 6 7 778889999
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 13 14 15 16 17 17 18 19 19 19 20 20 20 21 21
      12 2 2344566 7 7 78889991010
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 
      
      
      
      • 13 14 16 16 17 18 19 19 20 20 21 21 21 22 22
        13 2 2345566 7 7 8899910101010
      
      
      
      
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 
      
      
      
      • 
        
        
        
        • 15 16 17 18 19 19 20 20 21 21 22 22 23 23
          14 2 2345567 7 8 89991010101111
        
        
        
        
      
      
      
      
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 
      
      
      
      • 
        
        
        
        • 15 16 17 18 19 20 20 21 22 22 23 23 23 24
          15 2 3345667 7 8 8 9 9101011111112
        
        
        
        
      
      
      
      
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 
      
      
      
      • 
        
        
        
        • 15 16 18 18 19 20 21 22 22 23 23 24 24 25
          16 2 3445667 8 8 9 910101111111212
        
        
        
        
      
      
      
      
    
    
    
    
  
  
  
  


• 
  
  
  
  • 
    
    
    
    • 
      
      
      
      • 
        
        
        
        • 
          
          
          
          • 17 18 19 20 21 21 22 23 23 24 25 25 25
          
          
          
          
        
        
        
        
      
      
      
      
    
    
    
    
  
  
  
  

Appendix 398