This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
Graph showing relation between two variables is a 
Select and explain. 
A. Frequency polygram, B. Histogram, C. Scatter diagram, D. Pictogram
C: Scatter diagram
Answer: C: Scatter diagram 
Explanation: Scatter diagram is a graph in which the values of two variables are plotted along two axes, the pattern of the resulting points revealing any correlation present. Ref : Park 23rd edition Pgno : 846