1. Credit for this definition goes to Josh Wills. Other proposed definitions include “a statistician who lives in San Francisco,” “a data analyst who uses a Mac,” and “someone who is worse at statistics than any statistician, and worse at software engineering than any software engineer.” I prefer Wills’ definition for obvious reasons.
2. A nationwide voter list, for example, contains roughly 200 million rows and dozens or hundreds of variables, making it several orders of magnitude greater than even the largest datasets you are likely to see in grad school.
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