" Which of the following is not the “probability method” of sampling?

Correct option is D

Quota sampling is not a probability method of sampling. In quota sampling, the researcher selects participants based on specific characteristics (or quotas), but the selection is non-random, which makes it a type of non-probability sampling. In contrast, methods like systematic, stratified, and cluster sampling are probability-based, meaning each member of the population has a known, non-zero chance of being selected.
Information Booster:
In probability sampling, every member of the population has a specific probability of being selected, ensuring that the sample is representative of the population. This reduces bias and increases the generalizability of the results.
· Systematic sampling: Involves selecting every nth individual from a list after a random start.
· Stratified sampling: Divides the population into subgroups (strata) and randomly selects participants from each stratum.
· Cluster sampling: The population is divided into clusters, and then a random sample of clusters is chosen. Individuals within the selected clusters are then studied.
Additional Knowledge:
(a) Systematic sampling: A probability method where a systematic approach is used after an initial random start.
(b) Stratified sampling: A probability method that ensures subgroups (strata) are proportionally represented in the sample.
(c) Cluster sampling: A probability method where clusters, rather than individuals, are randomly selected, and everyone in the chosen clusters is studied.