Getting
averages from your results
You will probably do your experiments more than one time. When you do that, even though you think nothing has changed, you may still find that your measurements are not identical. This is for x reasons:
Averages are easy to calculate.
Example of an average: Distance a ball rolls from the top of a ramp. Trial 1: 5.8 meters (or feet or inches) Trial 2: 6.1 meters(or feet or inches) Trial 3: 6.0 meters(or feet or inches) Trial 4: 6.3 meters(or feet or inches) Trial 5: 5.9 meters(or feet or inches) Add up the results: 30.1 meters(or feet or inches) Divide by the number of trials: 5 Average time: 6.02 meters(or feet or inches) The average may be slightly different from any of the actual measurements, but it is going to be the result that means the most. See, easy! |