The Nurse Researcher Opts to Use Ratio-Level Data

The nurse researcher opts to use ratio-level data.What will be the researcher's primary concern if this level of data is used?

A) Categories must be mutually exclusive.
B) Intervals between data categories must be equal.
C) The rank of zero (0) represents the absence of the measured variable.
D) Variance between assigned categories is qualitative rather than quantitative.

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