Statistical Representation of DataPYQ Jan 26Question 4226 of 295
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A market researcher divides a city into 5 regions, where variation within region is little and there is a maximum variation between regions and randomly selects 100 households from each region for a survey. This sampling method is known as:

Options

ACluster Sampling
BQuota Sampling
CStratified Sampling
DSystematic Sampling
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Correct Answer

✅ Option c — Stratified Sampling

All Options:

  • ACluster Sampling
  • BQuota Sampling
  • CStratified Sampling
  • DSystematic Sampling

Detailed Solution & Explanation

In statistics, the sampling method described works as follows:
- The population (the city) is divided into homogeneous, non-overlapping groups called strata (the 5 regions), where the variation within each group is minimal and variation between the groups is maximized.
- A random sample of fixed size (100\displaystyle 100 households) is then drawn from each stratum.

This method is known as **Stratified Sampling**.

Let us briefly review the other options to confirm:
- **Cluster Sampling:** The population is divided into clusters, and entire clusters are randomly selected.
- **Quota Sampling:** A non-probability sampling method where samples are collected based on pre-defined quotas.
- **Systematic Sampling:** Elements are selected from an ordered population at a regular interval (e.g., every kth\displaystyle k^{\text{th}} element).

Hence, **Option C** 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 Syllabus

Exam Strategy Tip

This topic carries 2-4 Marks weightage. Focus on understanding core concepts rather than memorizing.

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