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a piece of information we gather using our senses


a testable idea or explanation that leads to a scientific investigation


a logical statement about what will happen if the hypothesis is correct


a procedure designed to test a hypothesis under controlled conditions


a factor that changes in an experiment in order to test a hypothesis


any pieces of information acquired through observation or experimentation


a linear dependence between two variables

experimental group

in a group that is identical to a control group except for one factor

control group

a group that serves as a standard of comparison with another group

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