PSYCH 2220 Chapter Notes - Chapter 1: Stroop Effect, Dependent And Independent Variables, Confounding
3 Feb 2018
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Organize, summarize, and communicate a group of numerical observations. Ex) average length of things - describes the length of many things with just 1 number. Use sample data to make estimates about a larger population. Sample: a set of observations drawn from the population of interest. Population: includes all possible observations about which we"d like to know something. It would be too expensive and would take too long to not gather data from samples. Variables: observations of physical, attitudinal, and behavioral characteristics that can take on different values. Discrete observation: can take only specific values (like whole #s); no other values can exist b/t these #s. Ex) how many times do you wake up early in a week? ) Nominal variable: used for observations that have categories or names as their values. Like assigning male participants with a 1" and females with a 2" (gender) Ordinal variable: used for observations that have rankings (1st, 2nd, 3rd) as their values.
