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For on-topic questions about statistics or machine learning used in marketing or market research.

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Observational study with many data Vs. Experimental study with fewer data: Which has more va...

So I have recently been debating two possibilities for determining the effectiveness of, let us say for simplicity, a single marketing strategy for getting return customers. … Using the historical data from times in the past when the store has marketed to try to estimate the effectiveness of the marketing to get customers to return. …
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