A data set (or dataset)  is a collection of data, usually
presented  in  tabular  form.  Each column  represents  a
particular  variable.  Each row  corresponds  to a  given
member of the  data set in question. Its  values for each
of the variables, such as  height and weight of an object
or values  of random  numbers. Each value  is known  as a
datum. The  data set  may comprise data  for one  or more
members, corresponding to the number of rows.

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