Which part of the scientific method is the following A can o

Which part of the scientific method is the following? A can of #4 Tennis balls and a can of 92 Tennis balls are carefully bounced, measuring how high each ball bounces. All balls bounce (within error) to the same height. Observation Hypothesis Experiment Analysis/Decision Theory

Solution

if a bounced 4 tennis balls carefully and other bounced two tennis balls to measurring how high each balls bounces this is part of experiment

but all balls bounces to the same height is observation.