Every variable should have an important attribute of being exhaustive. For the variable to be useful in research, researchers must be able to classify every observation in terms of one of the attributes composing the variable. Being exhaustive means that the researcher should be able to classify _____.

Question

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A. The correct answer is "A" because for a variable to be useful in research, researchers must be able to classify every observation in terms of one of the attributes composing the variable. Being exhaustive means that the researcher should be able to classify each and every possible observation.
B. This is an incorrect answer because for a variable to be useful in research, researchers must be able to classify every observation in terms of one of the attributes composing the variable. Being exhaustive means that the researcher should be able to classify each and every possible observation, not just each and every desirable observation.
C. This is an incorrect answer because for a variable to be useful in research, researchers must be able to classify every observation in terms of one of the attributes composing the variable. Being exhaustive means that the researcher should be able to classify each and every possible observation, not just each and every needed observation
D. This is an incorrect answer because for a variable to be useful in research, researchers must be able to classify every observation in terms of one of the attributes composing the variable. Being exhaustive means that the researcher should be able to classify each and every possible observation, not just each and every certified observation.

Every Variable Should Have an Important Attribute of Being Exhaustive