stackloss: The Brownlee stackloss data

Description Usage Format Note Source

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

1

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.


SMIR documentation built on May 29, 2017, 10:39 a.m.

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