CMST 2A03 Study Guide - Midterm Guide: Nonprobability Sampling, Scatter Plot, Proportional Representation

• School: McMaster University
• Department: Communication Studies
• Course: CMST 2A03
• Professor: Terry Flynn

Document Summary

Element or unit: a single case in the population. Population: all cases that a researcher is interested in. Sampling frame: the list of elements that the sample will be selected from. Sample: the elements (subset of a population) selected for investigation. Representative sample: a sample that contains the same essential characteristics as the population. Probability sample: a sample selected using a random process so that each element in the population has a known likelihood of being selected. Non-probability sample: a sample selected using a non-random method. Sampling error: estimation that error that occurs because of differences between the characteristics of the sample and those of the population. Non-response: when an element selected for the sample does not supply the required data. Census: data that comes from an attempt to collect information from all elements in the population. Not using a random method to pick the sample. The sampling frame: human judgement that selects one group over another.