Question

Which of the following are probability sampling methods?
1. Simple random sampling
2. Systematic random sampling
3. Stratified random sampling
4. Purposive sampling

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only.

Hint:

Probability sampling ensures randomization and reduces selection bias, making it ideal for statistical generalizations.

Answer 1

The Correct Option is B

Probability sampling methods are those in which each unit in the population has a known and non-zero chance of being selected. These include:

• Simple random sampling: Every individual has an equal probability of being chosen.
• Systematic random sampling: Selection occurs at regular intervals from a list.
• Stratified random sampling: The population is divided into subgroups (strata), and random samples are taken from each stratum.

Purposive sampling is a non-probability sampling method where participants are selected based on specific characteristics or judgment, not randomization.

Thus, the correct answer is (A), (B), and (C) only.