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The new forms of media
Testing
The process of using statistical methods to determine if there is enough evidence to reject a given hypothesis about a data set.
Z-test
A statistical test used to determine whether there is a significant difference between the mean of a sample and the mean of a population, or between the means of two samples, assuming a normal distribution.
T-test
A statistical test used to compare the means of two groups or samples to see if they are significantly different from each other.
Population Variances
A measure of the spread of a population's data points from its mean.
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