This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Measures of Central Tendency and Distribution, Subject name: Social & Preventive Medicine
Calculate the mean & mode of the given values: 2,2,3,4,4,4,4,5,5,7,8,8,9 
Select and explain. 
A. 4 and 5, B. 5 and 4, C. 5 and 9\, D. 9 and 5
B: 5 and 4
Answer: B: 5 and 4 
Explanation: Ans. (b) 5 and 4Ref: Park 22nd ed/789-90Therefore, mean =2+2+3+4+4+4+4+5+5+7+8+8+913= 65/13Mean = 5* Mode is most repeated/frequent value, which is 4, repeated 4 times.* Therefore the mean, mode will be 5 and 4 respectively.