ACS 401 Study Guide - Final Guide: Scatter Plot, Contingency Table, Square Number

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The primary goal in social science research is to test theories and hypotheses. Inferential statistics: statistical techniques used to draw inferences about the population from a sample. Goal: to learn about the characteristics of the population, based on what we learn from samples. There are two main applications to inferential statistics: estimation - using statistical information from a sample (e. g mean) to estimate characteristics of the population, hypothesis testing. Population or universe: the entire group of individuals or subjects that we want to study. Sample: carefully chosen subset of the population we are interested in. The sample must be representative of the population. Representative: the sample has the same characteristics as the population. Samples drawn according to the rule of epsem (every case in the population has the same chance of being selected for the sample). Random sampling techniques: simple random sample, systematic random sampling, stratified random sampling, cluster sampling.

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