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Before the 12th century, monks and nuns were usually taken from the
Standard Deviation
A measure of the amount of variation or dispersion of a set of values; how spread out numbers are around the mean.
Median
The middle value of a data set, which divides the set into two equal halves when arranged in ascending or descending order.
Pth Percentile
A value on a rank-ordered dataset below which a certain percentage (P) of observations fall.
Observations
Data collected during an experiment or research, representing the values or attributes of variables of interest.
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