Question

Liz and Michelle are testing which ball will bounce the highest. They test 4 different balls. Each ball is dropped five times from the same height. The height of the bounce is measured. At the end of the experiment, the data for each ball was averaged to obtain an average bounce height.

Is this a well designed experiment?

A) No, it does not give any data.

B) No, they should have used more types of balls.

C) Yes, they tested more than one thing at a time.

D) Yes, they averaged the measurements and had multiple trials.

Answer 1

D

Explanation:,

In designing an experiment there must be multiple trials. Multiple trials eliminate errors when the results are averaged.

This gives better results than when single measurements are used to determine results of experiments. The result of this experiment can be regarded as being reliable because it was well designed.