A clerk charts value distributions for a sample of addresses and immediately spots impossible ZIP codes. Which technique is the clerk primarily using?
Select an answer to reveal the explanation.
Short Explanation
A chart that screams '99999' is the eyeball version of profiling—you see the weird pile before you write a rule. Visual profiling helps anomalies jump out. It is discovery, not the final fix.
Full Explanation
Visual profiling uses charts and distribution views to reveal anomalies, skew, and impossible values early. Spotting invalid ZIP codes in a distribution supports subsequent rule definition and investigation. The technique is exploratory and complements, rather than replaces, formal correctness rules.