lathe1: Lathe data
In alr3: Data to Accompany Applied Linear Regression 3rd Edition

Description Format Source References Examples

These data are the results of an experiment to study the performance of cutting-tool material in cutting steel on a lathe. The two factors are revolution speed and feed rate. The response is tool life in minutes.

This data frame contains the following columns:

Feed: Coded feed rate, coded as (actual feed rate -13)/6. Feed is in thousandths of an inch per revolution.
Speed: Coded speed, coded as (actual speed -900)/300. Speed is in feet per minute.
Life: Life of tool until failure, minutes

M. R. Delozier

Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 6.3.