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Interval-valued data for professional categories by salary and working time.
data(profession.int)
An object of class symbolic_tbl (inherits from tbl_df, tbl, data.frame) with 15 rows and 4 columns.
symbolic_tbl
tbl_df
tbl
data.frame
Billard, L. and Diday, E. (2006). Symbolic Data Analysis. Wiley.
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