Overview of data collection methods

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Overview of data collection methods

  1. 1. Sampling and Experimentation: Planning and Conducting a Study Data must be collected according to a welldeveloped plan if valid information on a conjecture is to be obtained. This plan includes clarifying the question and deciding upon a method of data collection and analysis.
  2. 2. Methods of Data Collection • Census: a study that obtains data from every member of a population. • Sample Survey: a study that obtains data from a subset of a population. • Experiment: a controlled study in which the researcher attempts to understand cause and effect relationships. • Observational Study: researcher attempts to understand cause and effect relationships in an uncontrolled environment.
  3. 3. Factors to consider before selecting a data collection method There are multiple methods and tools that can be used to collect data, but you must decide which method will best answer your research questions. Before you select an appropriate data collection method, there are three main factors that should be carefully considered: • Consider the purpose for conducting the evaluation. • Consider the evaluation design. • Carefully consider the availability of resources for the project.

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