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SAS/QC® Software » Special Functions

SAS/QC software includes several specialized DATA step functions and CALL subroutines for computations that are related to control chart analysis, Bayes analysis of screening design, and sampling plan evaluation.

 

Functions for Control Chart Analysis
Function Purpose

C4

Expected value of the standard deviation of n independent normal random variables

CUSUMARL

Average run length for a cumulative sum control chart scheme

D2

Expected value of the sample range

D3

Standard deviation of the range of n independent normal random variables

EWMAARL

Average run length for an exponentially weighted moving average

PROBMED

Cumulative probabilities for the sample median

STDMED

Standard deviation of a sample median

 

CALL Subroutine for Bayes Analysis of Screening Designs
CALL Subroutine Purpose

BAYESACT

Posterior probabilities that observations are contaminated with a larger variance

 

Functions for Sampling Plan Evaluation
Function Purpose

AOQ2

Average outgoing quality for double-sampling plan

ASN2

Average sample number for double-sampling plan

ATI2

Average total inspection for double-sampling plan

PROBACC2

Acceptance probability for double-sampling plan

PROBBNML

Probability that an observation from a binomial(n,p) distribution is less than or equal to m

PROBHYPR

Probability that an observation from a hypergeometric distribution is less than or equal to x