{smcl} {* *! version 1.1.1 20jan2013}{...} {vieweralsosee "dftol" "help dftol"}{...} {vieweralsosee "dftolss" "help dftolss"}{...} {viewerjumpto "Syntax" "dftolgraph##syntax"}{...} {viewerjumpto "Description" "dftolgraph##description"}{...} {viewerjumpto "Options" "dftolgraph##options"}{...} {viewerjumpto "Examples" "dftolgraph##examples"}{...} {viewerjumpto "Author" "dftolgraph##author"}{...} {viewerjumpto "References" "dftolgraph##references"}{...} {title:Title} {p2colset 5 19 23 2}{...} {p2col:{hi:dftolgraph} {hline 2}}Graphs for distribution-free tolerance intervals{p_end} {p2colreset}{...} {marker syntax}{...} {title:Syntax} {phang2} {cmd:dftolgraph} {cmd:,} [{opt c:onf(#)} {opth r(numlist)}] {synoptset 12 tabbed}{...} {synopthdr} {synoptline} {synopt:{opt c:onf(#)}}set confidence level of the tolerance interval; default is {cmd:conf(95)}{p_end} {synopt:{opt r(numlist)}}set the number of blocks removed; default is {cmd:r(1 2 3 4 5 7 10 15 20 30 50 100 200 400)}{p_end} {synoptline} {marker description}{...} {title:Description} {pstd} {cmd: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 {help dftol} and {help dftolss}.{p_end} {marker options}{...} {title:Options} {phang} {opt conf(#)} specifies the confidence level of the tolerance interval as a percentage. The default is {cmd:conf(95)}, meaning a 95% confidence level. {phang} {opt r(numlist)} specifies the number of blocks removed. The default is {cmd:r(1 2 3 4 5 7 10 15 20 30 50 100 200 400)}. The maximal length of the {it:numlist} is 14 and the maximum allowable value of any component is 500. {marker examples}{...} {title:Examples} {cmd: . dftolgraph} {cmd: . dftolgraph, c(90) r(5(20)85)} {marker author}{...} {title:Author} {pstd}Ignacio López de Ullibarri{p_end} {pstd}Department of Mathematics{p_end} {pstd}University of A Coruña, Spain{p_end} {pstd}E-mail: {browse "mailto:ilu@udc.es":ilu@udc.es}{p_end} {marker references}{...} {title:References} {phang} Hahn G and Meeker WQ (1991), {it:Statistical Intervals}, New York: Wiley & Sons {phang} Murphy RB (1948), Non-parametric tolerance limits, {it:Annals of Mathematical Statistics}, 19: 581-589