Question

This is a short open-ended question. Write your answers on the lines,Use the table below to answer question 4.4 A student does an experiment to learn which kind of ballbounces highest. The table shows how she set up herexperiment and how high each ball bounced.A Explain why the student's comparison of the height ofthe bouncing balls is unfair.

Answer 1

(A)

The comparison is unfair because the height where each object is dropped is not the same, so he can't actually compare each bounce because the initial height is different, therefore, his results will be biased. Another reason is the material of the floor, it also should be the same for each case.

(B)

The changes the student can make are the type of floor and the height ball dropped. If the student uses the same type of floor and the same initial height, the experiment won't be biased.