level of meausrement

#1
Hi ,
I am woundering if you can tell me if I am corect in understanding the levelof mesuremnet?

The following data's level of measurement is ordinal. am I correct? It is making me confuse,because of the zero category. I am then thinking it could be ratio.please help.

Fall Risk Assessment
0 = no to minimal fall risk; 1 = moderate fall risk;
2 = high fall risk; 3 = severe fall risk
A.
 

JohnM

TS Contributor
#2
This is ordinal - they are categories, but there is a general "increase" or ordering.

It can only be ratio if it at least meets the criteria for interval level (which it doesn't) - you can't quantitatively define vague terms such as "minimal" or "moderate" "high" "severe" etc.