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Representativeness
Representing Reality: What Makes Good Data • 5m 27s
How well does your data match the reality of the the thing you're trying to measure? "Representative" data can be incredibly powerful, because it means your sample is a good match to the reality you are trying to understand. That allows you to analyze the data with a lot more confidence. Ask questions that will help you understand whether data is representative, meaning that it's free of significant bias.
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A Source for Comparison
We often prefer to have consistency in our data, but data without variation in crucial measures doesn't tell us anything. For example, if everyone in your office gets the same performance score (4 out of 5), the score will have no value in terms of how it explains actual work performance. In orde...
