Making samples 1 = MAT #SAMPLES (for making random samples of integers 1,2,...,N) 2 = MAT #INDVAR (making random samples of data files after MAT #SAMPLES 3 = MAT #SAMPLE (for creating SRS and URS samples) 4 = MAT #JACKKNIFE (for creating jackknife samples) C = Comparing samples S = More information on statistical operations