SamplingMCQPYQ Sep 24Question 2791 of 295
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What is the purpose of stratified random sampling?

Options

ATo divide the population into subgroups and then randomly sample from each subgroup
BTo ensure that every individual in the population has an equal chance of being selected
CTo select individuals based on their accessibility and convenience
DTo select a fixed percentage of the population without any specific criteria
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Correct Answer

✅ Option a — To divide the population into subgroups and then randomly sample from each subgroup

All Options:

  • ATo divide the population into subgroups and then randomly sample from each subgroup
  • BTo ensure that every individual in the population has an equal chance of being selected
  • CTo select individuals based on their accessibility and convenience
  • DTo select a fixed percentage of the population without any specific criteria

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Detailed Solution & Explanation

The primary purpose of stratified random sampling is to ensure representation from all key subgroups (strata) of a heterogeneous population. This is achieved by dividing the population into homogeneous, mutually exclusive subgroups (strata) and then drawing a random sample from each stratum. Therefore, Option A correctly describes this purpose. Hence, **Option A** is the correct answer.

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