stackloss {SMIR}R Documentation

The Brownlee stackloss data

Description

The data consist of 21 observations on stack-loss (the loss of acid through the stack) in a chemical plant for the conversion of ammonia to nitric acid, with three explanatory variables: air flow(x1), cooling water inlet temperature(x2) and acid concentration(x3).

Usage

data(stackloss)

Format

A data.frame of 21 obs. of 4 variables:
[,1] y integer, loss of acid through the stack
[,2] x1 integer, air flow
[,3] x2 integer, cooling water inlet temperature
[,4] x3 integer, acid concentration

Note

See p.469 of SMIR

Source

Lange, K L and Little, R J A and Taylor, J M G, (1989). "Robust statistical modeling using the $t$ distribution", J Amer Statist Assoc, 84, 881–896.


[Package SMIR version 0.02 Index]