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What Is a Placebo-Control Experiment? Why Is It Often Used

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What is a placebo-control experiment? Why is it often used in the study of alcohol and other drugs?


Definitions:

Standard Error

Standard error measures the accuracy with which a sample distribution represents a population by quantifying the variability of the sample mean.

Population Proportion

The fraction or percentage of a population possessing a particular characteristic.

Sample Size

The number of observations or units chosen from a population to participate in a study.

Standard Error

A statistical term that measures the accuracy with which a sample distribution represents a population by using standard deviation.

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