Social & Preventive Medicine All are true about data diagrams except:- A Frequency distributions are usually illustrated by histograms B Frequencies are commonly illustrated by bar cha C Bimodal frequency distribution has two tails and one peak D Frequency polygon is useful when comparing two or more frequency distributions by drawing them on the same diagram 💡 Explanation All are true about data diagrams except:- ✓ Correct Answer: C. Bimodal frequency distribution has two tails and one peak