ftccigar: ftccigar: FTC Cigarette Study

In thoree/stat340: Data and functions for BIAS at NMBU

ftccigar: FTC Cigarette Study

Description

The Federal Trade Commission (FTC) annually ranks varieties of domestic cigarettes according to their tar, nicotine, and carbon monoxide contents. Past studies have shown that increases in tar and nicotine are accompanied by an increase in the carbon monoxide emitted from the cigarette smoke.

Usage

ftccigar

Format

A data frame with 25 observations (rows) and 4 variables (columns).

	Column name	Data type	Description	Values
[,1]	tar	numeric	The tar content	(1 - 29.8)
[,2]	nicotine	numeric	The nicotine content	(0.13 - 2.03)
[,3]	weight	numeric	Weight in grams	(0.7851 - 1.165)
[,4]	carbonM	numeric	CO in milligrams	(1.5 - 23.5)

Details

The data is from Example 7.5 in A second course in statistics: Regression Analysis, 7th edition.

Source

Mendenhall, W., Sincich, T. (2012) A second course in statistics: Regression Analysis, 7th edition.. Pearson Education.

Examples

# Selected rows from the data frame
ftccigar[c(4, 8, 12, 16, 20), ]

# Scatterplot matrix
pairs(ftccigar)

thoree/stat340 documentation built on June 30, 2024, 4:04 p.m.