Examlex
Which of the following segments a heterogeneous population of records into a number of more homogeneous subgroups?
Beneficial
Producing positive or helpful results or effects; advantageous.
Sleeping
The natural state of rest for the mind and body, characterized by altered consciousness and reduced sensory activity.
Psychoactive Drugs
Substances that change brain function and result in alterations in perception, mood, or consciousness.
Categories
A method of dividing objects, concepts, or information into groups based on shared characteristics or attributes.
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