What is Population & Sample? What is sample? what is population? what is Sampling and Types of sampling?

 Population and Sample

Population:

The population is the whole group you want to make decisions about. A sample is a specific group from which you will collect data. The sample size is always less than the total population size. In the study, the population does not always refer to people. https://www.sciencedirect.com/topics/social-sciences/sampling-method

Sample

A sample is a subset of data that a researcher picks from a broader population using a pre-determined procedure. Sample points, sampling units, and observations are all terms used to describe these aspects. Creating a sample is a time-effective way to conduct research. In most circumstances, researching the whole population is either impossible or too expensive and time-consuming. As a result, looking at the sample yields information that the researcher may apply to the complete population.

 Sampling

Sampling is a method of choosing individuals or a part of the population to derive statistical conclusions and calculate population characteristics. For optimal derivation, sampling approaches can be applied in research survey software.

 
Two types of sampling techniques used in research

·      Probability

·      Non­-probability

Probability Sampling

A probability sample may be divided into four categories.

 

ü Simple random sampling

ü Systematic sampling

ü Stratified sampling

ü Cluster sampling

Non­-probability

A non-probability sample may be divided into four categories.

ü quota sampling

ü convenience sampling

ü purposive sampling   

ü snowball sampling.