Sampling And Sampling Techniques

• Population refers to an entire group that is under the study or investigation
• Parameters - measurement that describe the population
• Sample - A subset taken from a population
• Sample - A representation of the population with which one hopes to draw a valid conclusion
• Statistics - measurement that describe the sample
• Sampling - Process or technique of selecting a representative sample from the entire population to achieve biased results
• Probability sampling - A sampling technique in which the subjects of the population gets an equal opportunity to be selected as representative sample
• Non probability sampling - A method of sampling where the sample is not a proportion of the population and there is no system for selecting a sample
• Types of probability sampling

  • Simple random sampling
  • Systematic Sampling
  • Stratified sampling
  • Cluster sampling
  • Multistage sampling
• Types of non-probability sampling

  • Accidental Sampling
  • Convenience Sampling
  • Snowball Sampling
  • Quota Sampling
  • Purposive Sampling
• Simple Random Sampling - A sampling technique that involves selecting a sample from a population by randomly selecting members of the population.
• Systematic Sampling - Every kth element of the population is selected until the desired number of the elements in the sample is obtained
• Stratified Sampling - The population is divided into groups called strata, which is based on similar chareacteristics
• Cluster Sampling - Elements of the population is divided into groups called cluster
• Multistage Sampling - A combination of different sampling techniques is done in selecting respondents
• Accidental Sampling - Only those whom the researchers meet by chance are included in the sample
• Convenience Sampling - People are selected by simply because theyu are convenient sources of data for researchers
• Quota Sampling - Where you take a very tailored that's in proportion to some characteristics or trait of a population
• Purposive Sampling - The sample is defined for a purpose that is relevant to a specific study or research