Data for indexing sample size and acceptance number, given the code lette, AQL value and inspection type code.
A data frame with 1274 entries on the following 5 variables.
a factor for code letters, levels are A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S
a numeric vector for sample size
a factor for type of inspection, among tightened, reduced or normal, "t", "r", "n" respectively
a factor containing the different AQL levels, 26 in total
a numeric vector for acceptance number
Montgomery, D.C. (2005) Introduction to Statistical Quality Control, 5th ed. New York: John Wiley & Sons, ISBN 0-471-65631-3