Examlex
The cause of all accidents can be explained by only one theory.
Double-Masked Study
A type of clinical trial where neither the participants nor the experimenters know who is receiving a particular treatment, reducing bias.
Selection Bias
A distortion in the outcome of a study due to non-random selection of participants, leading to an unrepresentative sample.
Double-Masked
A study design in which neither the participants nor the researchers know which participants belong to the control group and which to the experimental group, to prevent bias.
Correlation
A statistical measure that describes the extent to which two variables change together, and the direction (positive or negative) of that relationship.
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