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The practice of polygamy is, by definition, an exception to which social expectation about marriage?
Standard Normal Variable
A random variable that has a mean of 0 and a standard deviation of 1, following the standard normal distribution.
Standard Normal Curve
The graphical representation of a normal distribution that has a mean of zero and a standard deviation of one, used in probability theory and statistics.
Z-score
A statistical measure representing the number of standard deviations a data point is from the mean.
Percentile
An indicator showing the value beneath which a certain percentage of data points in a collection of data lies.
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