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20 February, 19:49

When we consider data quality, what are the differences among validity, reliability, and representativeness? How can you know the data have high levels of these characteristics?

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  1. 20 February, 23:35
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    Validity is the degree to which the research measures what it has to measure. High validity = Proper Research Design.

    Reliability is the measure to which research measurement techniques are free of error or mistakes. High realiability = Reasearchers know the sample fully understands the question asked.

    Representativeness is the extent to which consumers in a study are similar to the larger group of interest. High representativeness = Sample is large and chosen in an unbiased way.
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