Key Feature of Random Sampling
In random sampling, which of the following is true?
- The investigator's judgment determines who is selected
- Every individual has an equal chance of being selected — Correct Answer
- Only the most accessible individuals are selected
- Selection is based on quota and convenience
Explanation:
Correct Answer Explanation
In Random Sampling, every individual has an equal chance of being selected. This ensures that the sample is unbiased and representative.
Key Points:
- Random sampling is also called the Lottery Method.
- All units of the population (the sampling frame) get an equal probability of inclusion.
- Example: Writing names of all 300 households on paper, mixing, and drawing 30 names.
- Nowadays, computer programmes are used to select random samples.
- Exit Polls use random sampling — voters exiting polling booths are randomly selected.
📚 About this Topic — CH-2: Collection of Data
This multiple choice question is from CH-2: Collection of Data, NCERT Books, Statistics for Economics. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from CH-2: Collection of Data to strengthen your preparation.
