Classroom Activity

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Key Topic: Linear Regression

The Neutral Buoyancy Laboratory allows astronauts an atmosphere resembling zero gravity (weightlessness) in order to train for missions involving spacewalks. In this activity, students will evaluate pressures experienced by astronauts and scuba divers who assist them while training in the NBL.

Students will
  • explain what is meant by the direction, form and strength of the overall pattern of a scatter plot;
  • define the correlation coefficient, r, and describe what it measures;
  • write a regression equation and interpret the meaning of the slope and y-intercept in context of the problem;
  • explain what is meant by extrapolation and interpret a situation where extrapolation occurs;
  • make predictions based on the correct mathematical model; and
  • plot residuals and interpret their graphical form.

› Spacewalk Training Educator Edition (PDF 566 KB)
› Spacewalk Training Student Edition (PDF 212 KB)

Files for use with the TI-Nspireā„¢
› Spacewalk Training TI_Nspire Educator Edition (PDF 335 KB)
› Spacewalk Training TI_Nspire Student Edition (PDF 184 KB)
Note: The following files are software specific files for Texas Instrument Nspire calculators.
› Spacewalk Training TI_Nspire Document (TNS 98 KB)
› Spacewalk Training TI_Nspire Document w/ Solutions (TNS 101 KB)

Related Resources
› VIDEO: Launchpad: Fluid Dynamics - What a Drag!