Frequency Polygon End Points
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Question (English)
When plotting a frequency polygon, the two end-points of the curve are joined to the base line at:
- The origin (0,0)
- Mid-values of two classes with zero frequency at each end ✓ Correct
- The maximum frequency point
- The last class boundary
Explanation:
Correct Answer Explanation
The two end-points are joined to the base line at the mid-values of the two classes with zero frequency immediately at each end of the distribution.
Key Points:
- This ensures the curve closes at the base line on both sides.
- It allows calculation of the total area under the curve.
- Broken lines or dots may join these ends with the base line.
- The total area under the curve then represents the total frequency.
Why Other Options Are Wrong
- A. The origin: The origin may not correspond to the correct zero-frequency class.
- C. Maximum frequency: The highest point is the peak, not the end point.
- D. Last class boundary: End points go to imaginary classes beyond the distribution.
📚 About this Topic — CH-4: Presentation of Data
This multiple choice question is from CH-4: Presentation of Data, NCERT Books, Statistics for Economics. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from CH-4: Presentation of Data to strengthen your preparation.
