Chapter 10 Flashcards
Population
All the elements that you want to make statements about.
Operational population
Demarcated section of the population based on a particular attribute.
The complete group of individuals with a common characteristic.
Sample sizes
A segment of the population that you may or may not have selected randomly, and that may be asked to participate in your research.
Sample
A portion, which may or may not be selected randomly, of the population that is given the opportunity to take part in the research.
Rules of drawing sample
These rules have consequences for how you handle the processing and the result and the reach of your results. The way you select your sample depends on whether you have gone for a qualitative or quantitative research design, as well as on your choice of data collection method.
Random
Each element should have an equal chance of being apart of the sample. 20 employees are chose from the 200, by selecting the 10th of the list. You can verify quantitatively whether the correlations between characteristics (variables) that you have found are valid for the whole population.
Non-probability
Not random. You doint know who your population is. You deliberately invite certain people. Experts for example. There is no sampling frame.
Sampling frame
Database from which you can draw a random sample.
Random number generator
Instrument for generating random numbers from a series.
Random sampling
Random sampling in which each unit has an equal chance of ending up in the sample.
Simple random sampling
Random sample from a database of the whole population.
Systematic sampling with a random starting point
A sampling method that involves drawing the sample systematically from the sample randomly from the population by choosing every nth unit from a random starting point.
Cluster sampling
Random sampling whereby several whole groups are drawn from the existing population.
Stratified sampling
Random sample drawn from several strata.
Multi-staged sampling
Various sampling methods whereby the sample is drawn from different layers of the population.