Maxima Function
discrete_freq (list)
Counts absolute frequencies in discrete samples, both numeric and categorical. Its unique argument is a list,
(%i1) load (descriptive)$ (%i2) load (numericalio)$ (%i3) s1 : read_list (file_search ("pidigits.data")); (%o3) [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 3, 8, 4, 6, 2, 6, 4, 3, 3, 8, 3, 2, 7, 9, 5, 0, 2, 8, 8, 4, 1, 9, 7, 1, 6, 9, 3, 9, 9, 3, 7, 5, 1, 0, 5, 8, 2, 0, 9, 7, 4, 9, 4, 4, 5, 9, 2, 3, 0, 7, 8, 1, 6, 4, 0, 6, 2, 8, 6, 2, 0, 8, 9, 9, 8, 6, 2, 8, 0, 3, 4, 8, 2, 5, 3, 4, 2, 1, 1, 7, 0, 6, 7] (%i4) discrete_freq (s1); (%o4) [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [8, 8, 12, 12, 10, 8, 9, 8, 12, 13]]
The first list gives the sample values and the second their absolute frequencies. Commands ? col
and ? transpose
should help you to understand the last input.