ऐसी नमूना चयन (सैंपलिंग) तकनीक जिसमें जनसंख्या की प्रत्येक इकाई के चुने जाने की समान संभावना होती है, कहलाती है:

Which of the following is NOT a non-random (non-probability) sampling technique?

In research methodology, which type of sample allows every member of the population an equal chance of selection to accurately represent the population?