EPn {AQLSchemes}

This function calulates the estimated proprtion non-conforming.

Description

This function calulates the estimated proprtion non-conforming with sigma unknown or known using the standardized distribution.

Usage

EPn(sample,sided,stype,LSL,USL,sigma,xbar,s,n)

Arguments

sample

sample is a numeric vector of sampled values.

sided

sided is 'one' or 'two' depending on whether there is one or two specification limits. The default is 'one'.

stype

stype is 'known' or 'unknown' depending on whether the standard deviation is known. The default is 'unknown'.

LSL

LSL is the lower spoecification limit, leave it out if there is no lower specification limit.

USL

USL is the upper spoecification limit, leave it out if there is no upper specification limit.

sigma

sigma is the known standard deviation, leave it out if it is unknown an stype is 'unknown'.

xbar

sample mean. Leave it out if the vector sample is supplied.

s

sample standard deviation. Leave it out if the vector sample is supplied.

n

number of items in the sample. Leave it out if the vector sample is supplied.

Value

returns a single number (the estimated proportion nonconforming)

Author(s)

John S. Lawson [e-mail]

Examples

EPn(sided="one",stype="known",LSL=100,sigma=8,xbar=110,n=10)
EPn(sided="one",stype="unknown",LSL=225,xbar=255,s=15,n=42)
sample<-c(197,188,184,205,201)
EPn(sample,sided="one",USL=209)
sample<-c(197,188,184,205,201)
EPn(sample,sided="two",LSL=180,USL=209)
EPn(sided="two",stype="known",sigma=2,LSL=90,USL=100,xbar=96.68,n=21)