Examlex
According to musical notes and the range of pitches of musical instruments, A4 has a fundamental frequency of 220 Hz, and A5 has a fundamental frequency of _____ Hz.
Causal Relationship
A connection between two events where one event is understood to be directly responsible for causing the other.
Placebo
An inert substance given to a patient in control groups for medical experiments to compare the effects of a particular drug.
Testable Hypotheses
A proposition that can be put to a practical test to determine its validity.
Relative Risk
A measure in epidemiology that indicates the likelihood of a certain event or disease occurring in one group compared to another.
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