A researcher wants to assess dietary habits in a city. He stands outside a gym and interviews willing passersby until he reaches 200 responses. This is an example of:

• A Simple random sampling
• B Stratified random sampling
• C Quota sampling ✓
• D Snowball sampling

Explanation

Quota sampling involves selecting a predetermined number of individuals from a population through non-random convenience methods. The researcher fills a quota of 200 without random selection. Simple and stratified random sampling require random selection from a sampling frame. Snowball sampling uses referrals from initial subjects.

Reference: Park's Textbook of Preventive and Social Medicine, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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