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Before we look at data sets, we can all cultivate better data sense. To that end, I’d encourage us all to look at one common kind of data with suspicion: the average. We all use averages on a daily basis—e.g., when we split a dinner bill or keep tabs on our favorite athletes. They can be useful. But the following examples show how these easy-to-compute shorthands can also lead us astray. Making money online For a pure e-commerce business, Average Order Value (AOV) is a standard measure of financial health. In addition to aggregate revenue, it gives business owners a…