Displaying a Confidence Interval for Cpm
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: CAPSPEC3 */
/* TITLE: Displaying a Confidence Interval for Cpm */
/* PRODUCT: QC */
/* SYSTEM: ALL */
/* KEYS: Capability Analysis, */
/* PROCS: CAPABILITY */
/* DATA: */
/* */
/* SUPPORT: saswgr */
/* REF: SAS/QC Software: Usage and Reference, Version 6, */
/* First Edition, Volume 1 and Volume 2 */
/* MISC: */
/* */
/* Examples in the documentation were created using the */
/* statement: ods listing style=statistical; */
/* */
/****************************************************************/
data Amps;
label Decibels = 'Amplification in Decibels (dB)';
input Decibels @@;
datalines;
4.54 4.87 4.66 4.90 4.68 5.22 4.43 5.14 3.07 4.22
5.09 3.41 5.75 5.16 3.96 5.37 5.70 4.11 4.83 4.51
4.57 4.16 5.73 3.64 5.48 4.95 4.57 4.46 4.75 5.38
5.19 4.35 4.98 4.87 3.53 4.46 4.57 4.69 5.27 4.67
5.03 4.50 5.35 4.55 4.05 6.63 5.32 5.24 5.73 5.08
5.07 5.42 5.05 5.70 4.79 4.34 5.06 4.64 4.82 3.24
4.79 4.46 3.84 5.05 5.46 4.64 6.13 4.31 4.81 4.98
4.95 5.57 4.11 4.15 5.95
;
title 'Boosting Power of Telephone Amplifiers';
proc capability data=Amps noprint alpha=0.10;
var Decibels;
spec target = 5 lsl = 4 usl = 6
ltarget = 2 llsl = 3 lusl = 4;
histogram Decibels / odstitle = title;;
inset cpklcl cpk cpkucl / header = '90% Confidence Interval'
format = 6.3;
run;
ods select indices;
proc capability data=Amps alpha=0.10;
spec target = 5 lsl = 4 usl = 6
ltarget = 2 llsl = 3 lusl = 4;
var Decibels;
run;