data on chemical components of 25 tobacco leaf
data(tobacco)
A data frame containing 25 observations on 9 variables.
cigarette Rate of cigarette burn in inches per 1000 seconds.
sugar Percent sugar in the leaf.
nicotine Percent nicotine.
nitrogen Percentage of nitrogen.
chlorine Percentage of chlorine.
potassium Percentage of potassium.
phosphorus Percentage of phosphorus
calcium Factor. Percentage of calcium.
magnesium Percentage of magnesium.
Anderson, R. L. and Bancroft, T. A. (1952), Statistical Theory in Research, McGraw-Hill Book Company, Inc., New York, NY.