Question: ZIP codes The U.S. Postal Service uses five-digit ZIP codes to identify locations to assist in delivering mail. a) In what sense are ZIP codes

ZIP codes The U.S. Postal Service uses five-digit ZIP codes to identify locations to assist in delivering mail.

a) In what sense are ZIP codes categorical?

b) Is there any ordinal sense to ZIP codes? In other words, does a higher ZIP code tell you anything about a location compared to a lower ZIP code?

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