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
For a group of n = 250 subjects, 40th percentile would be the following value- 
Select and explain. 
A. 7th, B. 40th, C. 100th, D. 140th
C: 100th
Answer: C: 100th 
Explanation: Ref: Parks 23rd edition 40th percentile means 40% values are below that paicular value . 40% of 250= 100