Examlex
An activity can be defined as
T-test
A statistical test used to compare the means of two groups or to compare a sample mean to a known value when variances are known or assumed to be equal.
Population Variances
Population variances measure the variability or spread of a population's data points from its mean, indicating how much the population data values differ from each other.
Ratio
A measure that compares two quantities by division.
Difference
The quantitative discrepancy or deviation between two values or sets of data.
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