Reviewing Data Sets

Bouncing Ball Experiment

Work Time

Bouncing Ball Experiment

Part 1

In this unit you analyzed data to decide what is typical. Often your conclusion answered a question, such as “How tall is a sixth grade student?” In an experiment a question is also asked, but the question usually takes the form of “What will happen if ...,” rather than asking about the current status of something (height, for example). Experiments also often involve collecting data to answer the question. A hypothesis is the experimenter’s prediction about what he or she thinks the answer to the experimental question is.

Conduct an experiment to answer the following question: “How high will a ball bounce if it is dropped from a height of 3 feet?”

  1. Write your hypothesis about what will happen. Will the ball bounce half of its drop height? More? Less?
  2. Tape a yardstick or tape measure to a wall. Drop a ball from 3 feet and record how high it bounces in inches (or fractions of an inch).
  3. Repeat the experiment 20 times.
  4. Make a line plot for the data.

Part 2

  1. Calculate the mean, median and range.

  2. Why do you think there was a range of data?

  3. Decide the answer to your question. Was your hypothesis correct?

  4. Justify your conclusion using the line plot and measures as evidence.

  5. Do you think you need more data? Why or why not?

2 of 12