Final answer:
On-site monitoring activities are conducted before, during, and after a study to ensure data accuracy and precision using quality control and assurance measures.
Explanation:
On-site monitoring activities are conducted before, during, and after completion of the study to ensure data accuracy and precision. These activities involve establishing strict quality control and assurance measures to minimize errors and maintain data integrity. The monitoring plan should include a well-documented schedule and coordination plan to ensure consistency and meet reporting deadlines.
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