RDA Flashcards
To improve knowledge of RDA terminology.
Scientific method of gathering information and summarizing it in the hope of identifying general patterns.
Empirical method
Principle that theories must be defined in a way that makes it possible to show they are wrong.
Falsifiability
Data in numerical form, the results of measurements.
Quantitative Data
Quantity that can change usually used to refer to a measure of phenomena
Variable
Precise statement of assumed relationship between variables
Hypothesis
All possible members of a category and from which a sample is drawn
Population
Information gathered not in numerical form
Qualitative data
Tendency to treat abstract concepts as real entites
Reification
Extent to which findings or measures can be repeated with similar results consistency of measures
Reliability
Group selected from population for an investigation
Sample
Extent to which instruments measure what they were intended to measure.
Validity
Sample in which members of a sub-group of the target population are over or under represented
Biased sample
Groups in the population are selected at random from among other similar groups and assumed to be representative of a population
Cluster Sample
Sample is selected because they are easily available for testing
Convenience/ Opportunity Sample
Sample selected from population with no conscious bias (but likely not to be truly random
Haphazard Sample
Sample selected so that specified groups will appear in numbers proportional to their size in the target population
Quota Sample
Type of sample aimed at if results of research are to be generalized
Representative Sample
SAmple selected for study on the basis of members own action in arriving at the sampling point
Self-Selecting Sample
Sample selected in which every member of the target population has an equal chance of being selected
Simple Random Sample
Sample selected by taking every nth case from a list of the target population
Systematic Random Sample
Systematic tendency towards over or under representation of some categories in a sample
Sampling Bias
Sample selected so that specific sub-groups will appear in numbers proportional to their size in the target population; within each sub-group cases are randomly selected
Stratified Sample
Phenomenon that varies. In psychology usually refers to phenomenon for which an objective measure has been provided
Variable