0 Grade 3 missions
Investigation Base · Challenge
Mission 3 of 3123
Question BeaconEvaluate reliability and repeated trials
MISSION TEXT
A student times one marble rolling down Ramp A and one rolling down Ramp B. A classmate suggests five trials per ramp, releasing the same marble from the same mark each time and calculating a typical result.
Why is the classmate's plan stronger?
Name two controls and explain how repeated trials make the conclusion more reliable.
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