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The primary advantage of cluster sampling is sampling convenience (and possibly less cost).The downside,however,is that the inferences drawn from a cluster sample can be less accurate,for a given sample size,than for other sampling plans.
Normal Physical Sensations
Ordinary or typical bodily feelings that arise from everyday activities, conditions, or responses to the external environment.
Dreaded Disease
A term referring to a particularly feared illness or condition, often because of its severity, painfulness, or the lack of a cure.
Persistence
The sustained effort and determination to achieve goals despite obstacles, difficulties, or discouragement.
Effort
The amount of physical or mental energy exerted towards achieving a task, goal, or objective.
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