In Big Data, Small Findings Can Have a Big Impact. Or Not

In HR analytics we are often so eager to discover something significant in the data that we hesitate to think about the impact of the finding. For example, analysis of a big data set might show a statistically significant difference in performance between baristas who like jazz and ones who like rock. That’s interesting for recruiting, but if the difference is that jazz loving baristas are, say, 3% faster on cash then it’s not very important.

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