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
Quantitative data can be compared by? 
Select and explain. 
A. Pictograph, B. Histogram, C. Pie cha, D. Spot Map
B: Histogram
Answer: B: Histogram 
Explanation: Ref: Parks 23rd edition 844 Data representation: Quantitative: Histogram Frequency polygon Frequency curve Scatter diagram Line diagram Qualitative: Pie cha Bar cha Pictogram