Vernier Software and Technology
Vernier Software & Technology

Tracks of a Killer

Figure from experiment 1 from Forensics with Vernier


The body of famous pop music producer Jonathan Wallace was found in his bathtub. It is our hypothesis that an intruder surprised the victim and drowned him. The only clue at the crime scene was a set of muddy footprints leading from a nearby window to the bathroom and back again. The footprints were smeared, so their exact size could not be determined. The soles of the shoes had no pattern. It will be difficult to match the footprints to any particular pair of shoes.


  • Determine if there is a relationship between the length of a person's stride and his or her height.
  • Determine if there is a relationship between the size of a person's shoes and his or her height.
  • Efficiently gather data to test for correlations between height, shoe size, and stride length.
  • Use a linear regression model of the data to predict height based on stride length.

Sensors and Equipment

No probeware required for this experiment.

Standards Correlations

See all standards correlations for Forensics with Vernier »

Forensics with Vernier

See other experiments from the lab book.

1Tracks of a Killer
2Bouncing Back
3Name That Tune
4Making Cents of Math: Linear Relationship between Weight and Quantity
5The Ink is Still Wet
6Speeding Up
7Drug Tests
8No Dumping
9Killer Cup of Coffee
10Dropped at the Scene
11Ashes to Ashes
12Hit and Run
13Life in the Fast Lane
14Chill Out: How Hot Objects Cool

Experiment 1 from Forensics with Vernier Lab Book

<em>Forensics with Vernier</em> book cover

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