Why this is mistaken
Storage is not measurement. A nominal category remains nominal when coded as a number, and an ordinal label does not gain equal spacing from consecutive codes. Select summaries from the variable definition and scale.
Where to watch
When this mistake may appear
- Categories are stored as 1, 2, and 3.
- An identifier contains a long number.
Check your work
Your work may contain this mistake if:
- Computes a mean invoice ID.
- Treats the gap from routine to elevated as equal to the gap from elevated to high.