Please enable JavaScript.

Coggle requires JavaScript to display documents.

Sampling (Design (Sample structure, Plans for analysing and interpreting…

- - - - Advantage
        
        Subjects are readily available
        
        Large amounts of information can be gathered quickly
      - Disadvantage
        
        The sample is not representative of the entire population, so results can't speak for them - inferences are limited.
        
        Prone to volunteer bias
  - - - Advantage
        
        Good for providing illustrative examples or case studies
      - Disadvantage
        
        Samples often small
        
        Cannot extrapolate from sample
        
        Very prone to bias
  - - - Advantage
        
        Quick and easy
        
        Doesn't need complete population information
        
        Good for face-to-face surveys
      - Disadvantage
        
        Greater risk of sampling error
        
        Expensive if the clusters are large
  - - - Advantage
        
        Quick and easy way of obtaining a sample
      - Disadvantage
        
        Not random, so some risk of bias
        
        Need to understand the population to be able to identify the basis of stratification
  - - - Advantage
        
        Simple to design and interpret
        
        Can calculate both estimate of the population and sampling error
      - Disadvantage
        
        Need a complete and accurate population listing
        
        May not be practical if the sample requires lots of small visits over the country
  - - - disadvantage
        
        Can be costly and time-consuming if the sample is not conveniently located
      - Advantage
        
        Easier to extract the sample than via simple random
        
        Ensures sample is spread across the population