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in set theory, a union between two or more data sets refers to all the elements in the data sets involved.
a statistical average; the sum of all the values divided by the number of values.
statistical data organised in a table. The data may be grouped or ungrouped.
the point or points at which a graph cuts or intersects the x-axis.
all the elements in the universal set that are not part of the given set. The complement of A is...