Question

In which type of sampling, population is divided into sub-populations and random elements are chosen from each of them?

• A. Systematic Sampling
• B. Stratified Sampling

Answer 1

The correct option is B Stratified Sampling

In stratified sampling, population is divided into sub populations and random elements are chosen from each of them.

For example, a company conducted a survey and randomly selected $10$ customers from each of its last $5$ production cycles to get feedback on their services. This is a kind of stratified sampling.

Whereas, in systematic sampling, selection of elements is done according to a set schedule or pattern.

For example, a company selected first $5$ customers from the last $10$ years to get feedback on their services. This represents systematic sampling as there is a pattern chosen to select the sample.

So, option (b) is correct.