PSY 200 Study Guide - Quiz Guide: Eye Color, Central Tendency, Operational Definition
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Nominal: this is an either/or category, where participants are classified into one group or another. Ex: eye color, what hand you write with. Places in a race (e. g. first, second, third). Does not determine the magnitude of difference between places. Interval: a set of rank-ordered categories where the difference between categories is all the same size. Does not have a set 0 point. Levels of magnitude in interval data are not consistent. Ratio: similar to interval data, except that it has a set 0 point. Additionally, ratios of numbers reflect ratios of magnitude. Operational definition: the definition of a specific variable by how it will be measured. Samples: a set of individuals who are from the population, who ideally are representative of population. Populations: every individual who fits that specific group. Statistics: refer to sample-level data, and describe the sample. Parameters: refer to population-level data, and describe the population.
