Please enable JavaScript.

Coggle requires JavaScript to display documents.

Sampling, Data collecting instruments, Software used for analysing data -…

- - - - The samples aren’t randomly picked and conducted by people who choose to include themselves in the research.
    - - only reach the samples that can be easily reached.
- - - - method of sampling that involves the division of a population into smaller sub-groups known as strata. In stratified random sampling, or stratification, the strata are formed based on members' shared attributes or characteristics such as income or educational attainment.
    - - divides large populations into stages to make the sampling process more practical.
    - - a sampling technique where every item in the population has an even chance and likelihood of being selected in the sample.