A hypothesis is a concept or idea that you test through research and experiments. In other words, it is a prediction that is can be tested by research.
Most researchers come up with a hypothesis statement at the beginning of the study. Thus basically, you make a prediction about the outcome at the start of the study and conduct experiments to test whether this predictipon is true and to what extent.
For example, let's say you come up with the following hypothesis:
Walking for 30 mins everyday reduces hypertension.
Once you have come up with this hypothesis, you need to design an experiment to test it. Let's say you decide to walk for a month and record your blood pressure. Then, as a control, for the next one month stop walking and see what happens to the blood pressure. This is how you test the hypothesis. Hope this helps.
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