Barbie
Bungee Jumping:
Graphing and
Extrapolating Data
Your Mission
• Team members have been hired to work for the Evil Knievel
Entertainment Company.
• This company provides rock climbing, sky diving, extreme
skateboarding and hang gliding adventures to the public.
• The current market research indicates that the company
should add bungee jumping to its list of entertainment
services.
• As part of the preliminary research, the management
assigned teams the task of working out the details of the
jump that will ensure a safe yet thrilling experience.
• The company has several sites planned for bungee jumping
and each site is at a different height.
Purpose
• To ensure a safe and thrilling jump you will
determine the relationship between the jump
height and the number of rubber bands used
to make the bungee cord. You must allow
your Barbie to come as close to the floor as
possible without sustaining any injuries or
fatalities.
Materials
1.
2.
3.
4.
Meter Stick
Rubber Bands, 7 to start
Barbie Doll
TI-83/84
Procedure
1. Use one rubber band to secure
Barbie’s ankles together and to
serve as a point of attachment
for the bungee cord.
2. Use a rubber band to tie back
Barbie’s hair.
3. Construct a bungee cord with 1
rubber band and attach it to
Barbie’s ankles.
4. Barbie will fall freely from a
standing position, plunging head
first throughout this lab.
5. Measure the initial length of the
1 band bungee you constructed
once it is attached to Barbie’s
ankles.
Procedure Pt. II
1. Test drop Barbie three times to practice taking
readings.
2. Drop Barbie three times and record the data each
time.
3. Add a rubber band to your attached bungee cord.
4. Measure the new cord length.
5. Drop Barbie three times and record the data each
time.
6. Repeat the steps until you have a total of 6 rubber
bands.
7. Record the data each time.
8. You may have to devise a way to take measurements
that are longer that 1.0meter.
Procedure Pt. III
1. Calculate the average of the data and record it in
the data table.
2. Using graphing software, construct a graph of
drop distance vs. number of rubber bands.
3. Run a linear regression on the data and write
your regression equation in y=mx+b format in
the space provided in the data table.
4. Use the regression equation to predict how
many rubber bands will be needed in order for
Barbie to perform a safe, yet thrilling jump for a
location specified (tomorrow)
Barbie Bungee Jumping
Graphing and Extrapolating Data
Name:
Number of
Rubber
Bands
Maximum Drop Distance
Trial 1
Trial 2
0
1
2
3
4
5
6
slope=
Linear Regression Equation:
y-intercept=
Trial 3
Average
Go To Barbie Jump Record Excel
Spreadsheet to Enter Data
• Test your hypothesis (make sure you check
your assumptions)
• Complete a Linear Regression T-test using
your data!!!
Conclusion Questions:
1. What is the significance of the y-intercept in
your regression equation?
2. Define the slope.
3. Create a scatter plot of your data.
4. What is your correlation?
5. What is the coefficient of determination?
6. Are your assumptions met? Why?
7. What is your t- test statistic?
8. Is there a relationship b/w the number of rubber
bands used and the length barbie drops?