Frequency   Effective  
Drug Yes No Total
A 26 19 45
B 14 14 28
C 10 7 17
D 22 68 90
Total 72 108 180
Column Proportions Effective  
Drug Yes No  
A 0.3611 0.1759  
B 0.1944 0.1296  
C 0.1389 0.0648  
D 0.3056 0.6296  
Total 1 1  
Row Proportions Effective  
Drug Yes No Total
A 0.5778 0.4222 1
B 0.5000 0.5000 1
C 0.5882 0.4118 1
D 0.2444 0.7556 1
Total  
Expectations   Effective  
Drug Yes No Total
A 18.0 27.0 45
B 11.2 16.8 28
C 6.8 10.2 17
D 36.0 54.0 90
Total 72 108 180
Differences   Effective  
Drug Yes No Total
A 8 -8 0
B 2.8 -2.8 0
C 3.2 -3.2 0
D -14 14 0
Total 0 0 0
Chi Square Values Effective  
Drug Yes No Total
A 3.5556 2.3704  
B 0.7000 0.4667  
C 1.5059 1.0039  
D 5.4444 3.6296  
Total 18.67647 Overall Chi Square Value
DF = (r-1)(c-1) = 3
Type I error rate= 0.05
Chi Square Critical value= 7.815