This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
If coefficient of correlation between height and weight is 2.6, TRUE is - 
Select and explain. 
A. Positive correlation, B. No association, C. Negative correlation, D. Calculation of coeffecient is wrong
D: Calculation of coeffecient is wrong
Answer: D: Calculation of coeffecient is wrong 
Explanation: Ans. is 'd' i.e., Calculation of coefficient is wrong o Coefficient of correlation lies between -1 and +1. It never occurs outside this range. So if the coefficient of correlation is 2.6 then there is some mistake in calculation.