Quote:
Originally Posted by fjtorres
Actually, on any given day some subcategories can be headed with single digit sales. Others might need thousands. Amazon slices and dices their categories to help buyers find books so there are lots of categories to slot books in.
This data set is a time slice snapshot.
Further slices will provide further snapshots to enable time-based analysis.
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As far as I can tell, most of the report focuses on a single category: what the author deems as "genre" fiction, or an amalgamation of sci-fi, romance, mystery, fantasy, and the like. I should dive into the data myself to see how this is categorized, because as good as the write-up was, it doesn't address some very basic aspects and could be ignoring thousands of relevant data points.
I was not talking about variability among micro-categories or even time, though they are also extremely relevant.