Can you describe interval and ratio level of measurement relating it to healthcare?© BrainMass Inc. brainmass.com March 4, 2021, 7:30 pm ad1c9bdddf
1. Can you describe interval and ratio level of measurement relating it to healthcare?
There are typically four levels of measurement that are defined:
In nominal measurement the numerical values just "name" the attribute uniquely. No ordering of the cases is implied. For example, jersey numbers in basketball are measures at the nominal level. A player with number 30 is not more of anything than a player with number 15, and is certainly not twice whatever number 15 is. In health care, different drugs might be labeled 1 through 5, which are nominal the numbers are only a means of classifying the drugs. Drug number 1 is not more than drug number 2 (as in ordinal level of measurement-see below), nor is drug 2, twice as much as drug 1 (as in ratio levels of measurement). The numbers are merely code numbers for the drugs.
In ordinal measurement the attributes can be rank-ordered. Here, distances between attributes do not have any meaning. ...
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