Examlex
In general,a frequency distribution should have at least 8 class groups but no more than 20.
Self-Reporting Instruments
Tools or questionnaires used for gathering data where participants report their own feelings, behaviors, or attitudes.
Communicable Diseases
Diseases that can be transmitted from one person to another, either directly through contact or indirectly through vectors.
Transmission
The act or process by which something is spread or passed from one person or thing to another.
Illnesses
Conditions that impair normal functioning, typically manifested by distinguishing signs and symptoms.
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