Most of the Commonly used distributions provide
Options
ABell – shaped
BU Shaped
CJ – Shaped Curve
DMixed Curve
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Statistical Representation of DataMCQPYQ Jan. 21Question 2694 of 295
All Questions Correct Answer
✅ Option a — Bell – shaped
All Options:
- ABell – shaped
- BU Shaped
- CJ – Shaped Curve
- DMixed Curve
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Detailed Solution & Explanation
In statistical analysis, most commonly used probability and frequency distributions (such as the Normal distribution, Binomial distribution for a large number of trials, and Poisson distribution for moderate to large means) exhibit a characteristic shape where the observations cluster around a central value and taper off symmetrically or near-symmetrically on both sides. This shape is graphically represented as a smooth, symmetric curve resembling a bell, known as a **Bell-shaped curve**.
Other shapes are less common in general applications:
- **U-shaped curves** represent distributions where the frequencies are high at both extremes and minimum in the middle (e.g., death rates by age).
- **J-shaped curves** (or reverse J-shaped curves) show frequencies that continuously increase or decrease (e.g., distribution of wealth).
- **Mixed curves** combine multiple peaks or shapes.
Since the most standard statistical distributions cluster around a central mean, they provide a bell-shaped curve.
Hence, **Option A** is the correct answer.
About This Chapter: Statistical Representation of Data
Paper
Paper 3: Quantitative Aptitude
Weightage
2-4 Marks
Key Topics
Data, Frequency Distribution, Graphical Representation
This chapter covers Data, Frequency Distribution, Graphical Representation and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.
View Official ICAI SyllabusExam Strategy Tip
This topic carries 2-4 Marks weightage. Focus on understanding core concepts rather than memorizing.
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