Examlex
Explain the difference between an observational study and an experiment.
Standard Deviation
A measure of the dispersion or spread of a set of values, indicating how much the values deviate from the mean of the data.
Test Statistic
A value calculated from sample data during a hypothesis test used to decide whether to reject the null hypothesis.
Standard Error
The standard deviation of the sampling distribution of a statistic, commonly the mean.
Sample Standard Deviation
A measure of the dispersion or variability of a set of sample data points.
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