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
Frequency polygon is obtained by joining the points of 
Select and explain. 
A. Bar diagram, B. Complete bar diagram, C. Multiple bar diagram, D. Histogram blocks
D: Histogram blocks
Answer: D: Histogram blocks 
Explanation: Ans. d (Histogram blocks) (Ref. Park PSM 22nd/ 788; Methods in Bio-statistics, by B. K. Mahajan 6th/p. 23)Quantitative data is presented by the following graphsQualitative or discrete or enumeration data is presented by the following graphs:# Histogram.# Bar diagram# Frequency polygon.# Pie or sector diagram# Frequency curve.# Pictogram# Line chart or graph.# Spot map# Cumulative frequency diagram (Ogive). # Scatter or dot diagram.