School

Ohlone College **We aren't endorsed by this school

Course

BIOLOGY 130

Subject

Statistics

Date

Aug 22, 2023

Pages

5

Uploaded by papaya_478 on coursehero.com

Thumb Wrestle Lab
Introduction:
What makes a "Class Champion" thumb wrestler? Does thumb circumference, length, or wrist
circumference have an effect on the overall chances of winning a thumb wrestling match? In this
investigation we will develop a hypothesis based on physical data collected from classmates. We will
then test this hypothesis by conducting a thumb wrestling tournament to determine an overall "Class
Champion".
Materials:
Metric ruler, scissors, string, calculator
Objectives:
●
Students will take and record accurate measurements of their wrist, and their thumb's
circumference and length.
●
Students will analyze the data collected and determine if their hypothesis is correct.
●
Learn the rules of thumb wrestling.
●
Conduct a thumb wrestling tournament.
●
Correctly graph the collected data.
Procedures:
●
Choose a partner and perform the following measurements
using yarn and a ruler. Then have your partner perform them
on you.
●
Measure the circumference of the thumb, in centimeters, at its
widest point. Record this data on the following line 6 cm
(round to the nearest whole number). Add your measurement
to the class
data table
.
●
Measure the length of the thumb, using the metric ruler in
centimeters, from its tip to the end of its second joint. Record
this data on the following line 7 cm (round to the nearest
whole number). Add your measurement to the class
data table
.
●
Measure the circumference of the wrist over the ulnar knob, in
centimeters, and record this data on the following line 14 cm
(round to the nearest whole number). Add your measurement
to the class
data table
.
.
●
The class will form and record a hypothesis based on the collected data
.
●
The Hypothesis:

If the length of your thumb is bigger than the person you're playing with, then you have a
better chance of winning.
Rules of thumb wrestling:
Two players grasp hands shown in the illustration; they touch thumbs
to the opposite sides of the other person's hand three times, then start wrestling. The object is
to hold the other person's thumb down, for a count of three, using only your thumb.
●
A tournament schedule will be set up to match opponents.
●
After the completion, a champion will be declared.
Analysis and Conclusion :
1. Restate your hypothesis:
If the length of your thumb is bigger than the person you're playing with, then you have a
better chance of winning.
2. Which students won?
Srikar Yalamanchili
3. What were the winner's measurements:
Thumb Circumference (cm)
8
Mean thumb circumference of
the class (cm)
6.6
Thumb Length (cm)
7
Mean thumb length of the class
(cm)
6.4
Wrist Circumference (cm)
18
Mean wrist circumference of the
class (cm)
15.6
4. Did all those with larger measurements win their matches? Explain.
No, however I felt like some of them weren't as strong. But most of them with large
measurements won most of their matches.

5. What is the independent variable?
The independent variable is the length of the thumb.
6. What is the dependent variable?
The dependant variable is the amount of wins.
7. Would this be considered a controlled experiment? Explain.
8. Use the data table to graph the findings for your group. You will create three column charts
with the following information:
a.
Thumb Length vs Number of Wins
b.
Thumb Circumference vs Number of Wins

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