Mitchell records the amount of time a toy car takes to travel down a ramp...
Experiments needs to be as accurate and precise as possible. Accuracy and precision helps to keep errors within reasonable limits as they are unavoidable.
How do can we now obtain an accurate and precise result?
After checking that all sources of errors are kept at bay and the procedures perfectly matches the hypothesis being test, it is best to repeat the experiment a few number of times.
Repeating an experiment is scientifically permitted as it helps to eliminate error to a reasonable extent.
Repeating an experiment will also help to authenticate Mitchell's claim and provide a confidence limit to draw a sound conclusion from.
From the repeated results, some statistical parameters that further provide solid backing for the hypothesis being tested will surface.
One of the key attribute of a hypothesis to be acceptable as being valid is that it must be repeatable.
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