Hypotheses and Scientific Method To be deemed legitimate, a hypothesis must offer a prediction that scientists can test using a repeatable experiment. A hypothesis cannot be regarded part of a legitimate scientific theory if it cannot be refuted by experimentation. Refuting a hypothesis requires an experiment capable of proving or disproving the hypothesis. If a hypothesis is correct, then its prediction will always turn out to be true; otherwise, the hypothesis would not be correct. For example, if I predict that it will rain on Saturday, and it doesn't rain on Saturday, then I know that my hypothesis is not correct. However, if I predict that it will rain on Saturday and it does rain on Saturday, then I can conclude that my hypothesis is correct. A correct hypothesis leads to conclusions that can be tested through experiments. If an experiment confirms the correctness of a hypothesis, then we say that the hypothesis has been proven correct. If an experiment fails to confirm the correctness of a hypothesis, then we say that the hypothesis has been disproved. In science, a hypothesis is a statement that tries to explain some phenomenon or group of phenomena. Scientists often start with a hypothesis, which is then tested using evidence gathered during research. The results of the research either support or refute the original hypothesis.