*! version 1.1.1 20jan2013

Title

dftolgraph -- Graphs for distribution-free tolerance intervals

Syntax

dftolgraph , [conf(#) r(numlist)]

conf(#) set confidence level of the tolerance interval; default is conf(95)

r(numlist) set the number of blocks removed; default is r(1 2 3 4 5 7 10 15 20 30 50 100 200 400)

Description

dftolgrah produces graphs showing the relationship between sample size (from 10 up to 1000), number of blocks removed (<= 500), confidence
level and percentage of the population contained in distribution-free tolerance intervals. The graphs displayed are similar in spirit to those
shown in Murphy (1948) or Hahn and Meeker (1991). See also dftol and dftolss.

Options

conf(#) specifies the confidence level of the tolerance interval as a percentage. The default is conf(95), meaning a 95% confidence level.

r(numlist) specifies the number of blocks removed. The default is r(1 2 3 4 5 7 10 15 20 30 50 100 200 400). The maximal
length of the numlist is 14 and the maximum allowable value of any component is 500.

Examples

. dftolgraph
. dftolgraph, c(90) r(5(20)85)

Author

Ignacio López de Ullibarri

Department of Mathematics

University of A Coruña, Spain

E-mail: ilu@udc.es

References

Hahn G and Meeker WQ (1991), Statistical Intervals, New York: Wiley & Sons

Murphy RB (1948), Non-parametric tolerance limits, Annals of Mathematical Statistics, 19: 581-589