The range is the difference between the extreme values.
(%i1) load (descriptive)$
(%i2) load (numericalio)$
(%i3) s1 : read_list (file_search ("pidigits.data"))$
(%i4) range (s1);
(%o4) 9
(%i5) s2 : read_matrix (file_search ("wind.data"))$
(%i6) range (s2);
(%o6) [19.67, 20.96, 17.37, 24.38, 22.46]