After you explore your problem or topic and form a hypothesis, you conduct an experiment to see whether your hypothesis holds true. Typically, you want to conduct multiple trials of your experiment. This point means that you either go through the experimental procedure several times, or you conduct your tests on multiple subjects at once.

Reasons for Multiple Trials

After a science experiment, you draw conclusions from your findings. In general, you decide whether the results support or contradict your hypothesis, or prediction. A common concern is whether glitches in preparing, executing or interpreting your study make your findings questionable. Multiple trials allow you to see whether the results of each test, or the trials as a whole, show consistency. Consistent findings reinforce the value of your conclusions.