PSYC 1010 Final: 1010 exam ch1 PDF
Chapter 1 1010 exam study
Branches of statistics
•Descriptive: group of numerical observation
•Inferential: general estimates about larger population
Types of variables
•Discrete observation: whole numbers, ex scales
•Nominal: categories
•Ordinal: ranks, whole numbers (1st,2nd…)
•Continuous observation: full range can be decimals
•Interval: scale, with no real 0
•Ratio: has scale like interval but with real 0
•Reliable: measure is consistent
•Valid: measure is one that measures what it was internet to measure
Formats for experiments
•Between-group design: which participants experience one and only one level of the
independent variable
•Within-group deign: which all participants in the study experience the different
levels of the independent variable
•Levels: the discrete values or conditions that variables can take one