FOOD 2010 Lecture Notes - Lecture 8: Nonprobability Sampling, Data Mining
14 Jul 2018
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Document Summary
People will answer the questions truthfully, the researchers themselves will understand the answers provided. Experiment: obtaining data by manipulating factors under tightly controlled conditions to test cause and effect. Observation: watching, either mechanically or in person, how people behave. Ethnographic research: observational approach to discover subtle emotional reactions as consumers encounter products in their natural use environment . Sampling: the process of gathering data from subsets of a total population. Probability sampling: using precise rules to select the sample such that each element of the population has a specific known chance of being selected. Nonprobability sampling: using arbitrary judgements to select the sample so that the chance of selecting a particular element may be unknown or zero.
