This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
Association can be measured by all of the following except- 
Select and explain. 
A. Correlation coefficient, B. cronbach's alpha, C. P value, D. Odds ratio
B: cronbach's alpha
Answer: B: cronbach's alpha 
Explanation: .