Final answer:
Repeat experiments to ensure results are not due to chance; this practice is critical for validating scientific findings and strengthening the reliability of the results.
Step-by-step explanation:
Always repeat experiments to prove the outcome isn't a fluke or an outlier. Through the process of repetition, scientists seek to validate their results by obtaining consistent findings across multiple tests. This is essential because it helps to ensure that the outcomes provide measurable results, which can then be replicated by others to bolster the credibility of the findings.
An experiment must be tested using repeated trials to collect evidence that can either support or refute a hypothesis, and this helps to confirm that the results aren't merely due to chance or experimental error.
Furthermore, repeated experiments contribute to determining whether the results are robust and reliable, which is especially critical in fields where hypotheses have significant implications, like in medical research. While every test will not provide a simple yes or no answer, accumulating evidence through replication enhances our understanding and brings us closer to the truth.