Does anyone have an easy way to remember the Scales of Measurement in statistics?

I'm trying to find an easy way to remember the 4 Scales of Measurement in statistics:





Nominal


Ordinal


Interval


Ratio





Any suggestions?

Does anyone have an easy way to remember the Scales of Measurement in statistics?
Memorize them in that order, each level has one more quality that the one before it did not.





Nominal has no magnitude, intervals, or rational zero


Ordinal has magnitude but no intervals or rational zero


Interval has magnitude, intervals, but no rational zero


Ratio has magnitude, intervals, and a rational zero





Here is a good site that explains the scales:


http://www.psychstat.missouristate.edu/i...