Zusammenfassung der Ressource
Variables
- to test hypotheses
- measure variables
- two kinds of variables
- a proposed cause
- a proposed outcome
- Independent variable
- we think is a cause
- is a predictor
- Dependent variable
- we think is an effect
- is an outcome
- Levels of measurement
- variables can be
- categorical
- binary variable
- two distinct types of things
- responding yes or no
- nominal variable
- more than two categories
- ordinal variable
- categories have logical order
- continuous
- interval variable
- ratio variable
- measure error
- vality
- reliability