Question

If Jio invites opinion on its new service through questions on radio and newspaper and people who respond become a part of sample. Such sampling technique is known as :
1. Self-selected sampling
2. Cluster sampling
3. Area sampling
4. Multistage sampling

Answer 1

Correct Answer - Option 1 : Self-selected sampling

The correct answer is Self-selected sampling

• Self-selection sampling is a type of non-probability sampling technique. Non-probability sampling focuses on sampling techniques that are based on the judgement of the researcher.
• In statistics, self-selection bias arises in any situation in which individuals select themselves into a group, causing a biased sample with nonprobability sampling.
• It is commonly used to describe situations where the characteristics of the people which cause them to select themselves in the group create abnormal or undesirable conditions in the group.
• In the given situation, only people who peruse newspapers and radio become part of the sample.

 

1. Cluster Sampling: It is based on the ability of the researcher to divide the sampling population into groups, called clusters and then to select elements within each cluster, using the simple random sampling technique. It is appropriate when the population is large.
2. Area sampling is a method of sampling used when no complete frame of reference is available. The total area under investigation is divided into small sub-areas which are sampled at random or according to a restricted process (stratification of sampling).
3. In statistics, multistage sampling is the taking of samples in stages using smaller and smaller sampling units at each stage.