.BG D
.VE $Header: /usr3/s/current/s/data/.help/RCS/stack,v 1.2 83/12/30 23:10:16 rab Exp $
.FN stack
.TL
stack: Stack-loss Data
.PP
.AG loss
percent of ammonia lost (times 10).
.AG x
matrix with 21 rows and 3 columns representing
air flow to the plant,
cooling water inlet temperature,
and acid concentration as a percentage (coded by
subtracting 50 and then multiplying by 10).
.AG collab
character labels for columns of `x'.
.PP
The data is from operation of a plant for the oxidation of ammonia to nitric
acid, measured on 21 consecutive days.
.SH SOURCE
K. A. Brownlee, 
.ul
Statistical Theory and Methodology in Science and Engineering,
Wiley 1965, p 454.
Copyright 1965 by John Wiley & Sons, Inc., New York.
Also in Draper and Smith, 
.ul
Applied Regression Analysis,
Wiley, 1966, Ch 6,
and Daniel and Wood, 
.ul
Fitting Equations to Data,
Wiley, 1971, p 61.
.KW dataset
.WR
