Introduction It is obvious that data is involved in any kind of research. The data is collected and analyzed in order to arrive at a meaningful conclusion in relation to the focus of the study or research. Data analysis is usually easier when we have a good understanding of the right statistical tool or technique or test to use. Before we dive deeper, let's refresh our knowledge of some basic data-related concepts. Basic Concepts Data: Data refers to a collection of facts and figures. It could be in the form of numbers, texts, images, sound, among others. Primary data: This refers to the first-hand data collected directly from the source or subject or sample of a study or research. The subject or sample of the study could be human beings or plants or animals or other things. Primary data could be obtained through observation, survey, the use of questionnaire, and so on. Secondary data: This refers to the data that was obtained from already existing data which was o...
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