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How many years of transactions should be included in the Transaction Data file?

April 26, 2017Data file included transaction transactions

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How many years of transactions should be included in the Transaction Data file?

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The Transaction Data file should include data for at least 12 months before the start of the promotion being analyzed. Also, it should include all purchase transactions in the promotion period – not just for the brand which is being promoted, but also for all the other brands in that category.