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This document outlines different research methods used to collect data, including primary and secondary sources, observation, experiments, surveys, sampling techniques, survey approaches, questionnaire structures, and survey administration frequencies. Primary data is collected directly from original sources like observation or experiments, while secondary data comes from existing sources. Sampling can be probability-based using random, systematic, or stratified methods, or non-probability based like convenience or judgmental sampling. Surveys are commonly conducted by post, telephone, or in-person interviews using either unstructured or structured questionnaires that may be administered in-house or outsourced. Surveys can also vary in frequency from ad hoc to continuous collection.Read less