Our Research question for this Guided Research deal with changes in the Water Quality Index from the beginning and end of a stream. You have gathered background information and you have collected your data. It is time to revisit the hypothesis for this res. Remember, the hypothesis is merely a tentative explanation proposed to account for the observed phenomena. You are speculating on how natural events will turn out, based on what you know.
Science is systematic in method because it seeks a system of prediction.
The prediction is the hypothesis. Your experiments were designed totest hypotheses by testing the validity of the predictions or conclusions derived from them. The primary purpose of designing scientific experiments is to test the proposed hypotheses. It is important to know that hypotheses are never proven - they are either supported or not supported by the data from your experimental results. There is no measurable change between the the WQI at the headwaters of a stream and the WQI at the mouth of a stream.