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
The frequently occuring value in a data is 
Select and explain. 
A. Median, B. Mode, C. Standard detion, D. Mean
B: Mode
Answer: B: Mode 
Explanation: Mode is the commonly occurring value in the distribution of data . Advantages : easy to understand and is not affected by extreme values Disadvantages : exact location is unceain and often not clearly defined Ref : Park&;s Textbook of Preventive and Social Medicine; 23rd edition - Pgno. 847