Thumb Wrestling Lab Quiz

What material is used to measure the length of the thumb in the experiment?

• A digital scale

• A metric ruler

• A thermometer

• A stopwatch

How do you measure the circumference of your thumb?

• By using a ruler

• By wrapping a piece of string around the thumb knuckle

• By using a tape measure

• By estimating with your eyes

What is one of the tasks you need to complete after the thumb wrestling tournament?

• Write a report

• Make a copy of the spreadsheet

• Conduct another tournament

• Interview participants

What is/are the independent variable(s) in the thumb wrestling experiment?

• Number of wins

• Thumb length

• Thumb circumference

• Wrist circumference

A controlled experiment is one where there is a control variable. Is this a controlled experiment?

• Yes, because there is a control variable.

• No, because there is no control variable.

• Yes, because all variables are constant.

• No, because the dependent variable changes.

What is the dependent variable?

• Thumb Circumference

• Number of Wins

• Thumb Length

• Wrist circumference

Where is the independent variable?

Where is the dependent variable?

Based off the graph; is there a correlation between thumb length and chances of winning a thumb wrestling match?

• Yes.

• No.

What could have been sources of error in the experiment?

• Incorrect ruler readings

• inserting the incorrect unit (cm v mm)

• are wrestling instead of thumb wrestling

• Inability to verify number of wins