Today you’ll complete a Sugar Skull Engineering Challenge.
You will:
Build a skull using a mold and your team’s chosen method
Test its strength using the class testing method
Record data and improve your design for a second iteration
Be ready to explain what you changed and how the data supported your decision.
You are running a Sugar Skull Engineering Challenge. Team A uses a 2:1 sugar-to-water ratio and Team B uses a 3:1 sugar-to-water ratio. Both teams use the same skull mold, the same packing time, and the same drying time. What is the independent variable in this test?
To compare Iteration 1 vs. Iteration 2 fairly, which actions would most improve the reliability of your data? (Select two.)
A team’s skull held a maximum force of
Match each data term to its best description.
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
Median | arrow_right_alt | Average of all values |
Range | arrow_right_alt | Middle value when ordered |
Outlier | arrow_right_alt | Highest minus lowest |
Mean | arrow_right_alt | Value far from the rest |
A class tested three designs and recorded the maximum force each skull held (in
Design A trials:
Design B trials:
Design C trials:
Based on your Iteration 1 test results, write one specific change your team will make for Iteration 2.
True or False: A fair test usually changes only one variable at a time while keeping other conditions the same.