cmBE: Break-even value of cm parameter

In LTPDvar: LTPD and AOQL Plans for Acceptance Sampling Inspection by Variables

Break-even value of cm parameter

Description

Break-even value of c_m parameter (which is ratio of cost of inspection of one item by variables to cost of inspection of the item by attributes), i. e. the value of c_m for which mean inspection cost per lot of process average quality for inspection by variables and attributes is equal to mean inspection cost per lot of process average quality for inspection by attributes, using plan (n, c).

Usage

cmBE(N, pbar,px,n,c,type=c("LTPD","AOQL"),
type2 = c("exact", "napprox","ewmaSK","ewma2"),lam=1)

Arguments

N	lot size (number of items in the lot)
pbar	process average fraction defective
px	lot tolerance fraction defective pt (if type="LTPD", which is default) or average outgoing quality limit p_L (if type="AOQL")
n	sample size of benchmark plan for sampling inspection by attributes
c	acceptance number of benchmark plan for sampling inspection by attributes
type	type of acceptance sampling plan; "LTPD" stands for Lot Tolerance Percent Defective (see planLTPD), "AOQL" stands for Average Outgoing Quality Limit (see planAOQL)
type2	type of OC to be used
lam	smoothing parameter in case that the EWMA statistic is to be used, defaults to 1

Value

single number

References

Kasprikova, N. and Klufa, J.: AOQL Sampling Plans for Inspection by Variables and Attributes Versus the Plans for Inspection by Attributes. Quality Technology & Quantitative Management, 12/6. 2015.

See Also

planLTPD, planAOQL

Examples

cmBE(N=1000,pbar=0.001,px=0.01,n=80,c=0,type="LTPD",type2="exact");

LTPDvar documentation built on May 1, 2022, 5:07 p.m.