Frequency Polygon Construction
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Question (English)
A frequency polygon is drawn by joining the:
- Lower corners of histogram rectangles
- Midpoints of the topside of consecutive histogram rectangles ✓ Correct
- Upper right corners of histogram rectangles
- Base points of histogram rectangles
Explanation:
Correct Answer Explanation
A frequency polygon is drawn by joining the midpoints of the topside of consecutive rectangles of the histogram.
Key Points:
- Frequency polygon is an alternative to histogram and is derived from it.
- The two end-points are joined to the base line at mid-values of two classes with zero frequency at each end.
- The total area under the curve equals total frequency or sample size.
- Frequencies are always plotted against mid-points of class intervals.
- It is the most common method of presenting grouped frequency distribution.
Why Other Options Are Wrong
- A. Lower corners: This would trace the base, not the frequency.
- C. Upper right corners: Only midpoints of top sides are joined.
- D. Base points: Base points are all at zero level.
📚 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.
