Accuracy refers to how close a measurement is to the true value, while precision refers to the consistency of repeated measurements. A scale may provide precise but inaccurate results. To determine which paper plane flies farther, one should calculate the average distance and standard deviation for each plane from the 5 trials. The plane with the higher average but lower standard deviation would indicate it can fly farther in a more consistent manner. The experiment could be improved by increasing the number of trials.
2. Accuracy -- is the closeness of a measured data
to its true value
Precision – is he closeness of repeated
measurement to each other
A fault balance could give precise (i.e. very
repeatable) but inaccurate (i.e. untrue) results
3.
4. One wants to know the performance of two
paper planes, which plane can fly farthest.
5. Paper plane 1
(metre)
Paper plane 2
(metre)
Trial 1 5.52 4.50
Trial 2 7.20 12.31
Trial 3 6.96 2.01
Trial 4 5.87 3.14
Trial 5 5.69 3.01
Based on the data above, which one is a better plane which can fly
farther? Give reason. Can you improve the experiment?
