Simple Summary Statistics
            IMSL_NORM1SAMP: Mean and variance inference for a single normal population.
            IMSL_NORM2SAMP: Inferences for two normal populations.
            IMSL_SIMPLESTAT: Univariate summary statistics.
            Tabulate, Sort, and Rank
            IMSL_FREQTABLE: Tallies observations into a one-way frequency table.
            IMSL_RANKS: Ranks, normal scores, or exponential scores.
            IMSL_SORTDATA: Sorts data with options to tally cases into a multiway frequency table.