AP Stats: 12.1, part 1 - MATH WITH MAYER

AP Stats: 12.1, part 1

Inference for Linear Regression: Intro, conditions, parameters, computer outputs

Is there a linear relationship between the height from

which a paper helicopter is released and the time it takes to hit the ground?

In this activity, we will perform an experiment to investigate this question.

Explanatory variable: drop height (inches)

Response variable: Time (seconds)

Experimental units: 50 rotocopters

Treatments: 5 different heights

What kind of lurking variables could there be, and what could we do to control them?

What/how should we randomize?

Let's set some ground rules: Where do we start the measurement? Where do we end the measurement? (once it hits the ground, vs. once it stops spinning...does it matter?) How is it dropped?

Within your group, you need to assign jobs:

Recorder: Records the time for each rotocopter

Measurer: Initially measures the perpendicular distance each will drop

Dropper: Drops the rotocopter Caller: Calls time when the rotocopter hits the

ground (in whatever fashion we consistently define that to be). Police (could be more than one person): Makes sure that the procedure is as consistent as possible.

Before you start dropping...

You and your group will find a consistent place to drop the rotocopters. It must be a different height than any other group, so get my approval before you start.

Measure this height to the nearest 0.5 inch. Please don't put yourself in danger by balancing

on a unstable surface. I don't have time to fill out injury reports. When you return, add your data to the table and dotplot. Record the data and dotplot on your page as well. You have 10 minutes. Go.

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