PSY 1061 Study Guide - Midterm Guide: Quasi, Random Assignment
23 Sep 2015
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Introduction to social science research principles and terminologies. Population: an individual or group that represents all the members of a group of interest. There are two kinds of population, namely: infinite and finite. Parameter: a values, or values, derived from population data. Descriptive statistics: collection, presentation, and description of sample data. Inferential statistics: making decisions and drawing conclusions about populations. Random sampling: every member of the population has an equal chance of being selected into a sample (your study). Biased sampling method: a sampling method that produces data which systematically differs from the sampled population. Unbiased sampling method: one that is not biased. Variable: a characteristic that can have different values. Experiment: a planned activity whose results yield a set of data. Parameter: a numerical value summarizing all the data of an entire population. Statistic: a numerical value summarizing the sample data. Quantitative variable: a variable that quantifies an element of a population.
