SOCY 1000 Lecture Notes - Lecture 3: Simple Random Sample, Opinion Research Corporation, Confidence Interval
23 May 2016
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Document Summary
Survey- a method of data collection in which a subset of some population of interest is asked question about some phenomenon of interest. Surveys are perhaps the most important methodology used by social scientists. They are useful because surveys allow us to draw conclusion about the entire population of interest, not just the people we have contact. Modern surveys developed in the early 20th century as a merger of advances in mathematics and questionnaire design. Survey sampling error- sampling error for a yes-no question for a sample size n from a populations of size n. Note: this is with a 95% con dence interval. Things to remember about sampling error in surveys: in practical terms, the sample sizes is the most important factor affecting sampling error. 2. this formula is only good for simple random samples: sampling error is not the only error possible in surveys; it"s the only one we can readily measure.
