Data from a study of 654 children on the relationship between smoking status and 
lung function (measured by FEV). Each row corresponds to a single clinic visit and contains
information on age, height, sex, FEV, and smoking status.
More information, including a coding key, is available at
<a href="http://www.emersonstatistics.com/datasets/fev.doc">http://www.emersonstatistics.com/datasets/fev.doc</a>.

datasets

A set of tools to streamline data analysis. Learning both R and introductory statistics at the same time can be challenging, and so we created 'rigr' to facilitate common data analysis tasks and enable learners to focus on statistical concepts. We provide easy-to-use interfaces for descriptive statistics, one- and two-sample inference, and regression analyses. 'rigr' output includes key information while omitting unnecessary details that can be confusing to beginners. Heteroscedasticity-robust ("sandwich") standard errors are returned by default, and multiple partial F-tests and tests for contrasts are easy to specify. A single regression function can fit both linear and generalized linear models, allowing students to more easily make connections between different classes of models.

Amy D Willis

rigr

Regression, Inference, and General Data Analysis Tools in R

Taylor Okonek

Charles J Wolock

Brian D Williamson

Scott S Emerson

Andrew J Spieker

Yiqun T Chen

Travis Y Hee Wai

James P Hughes

R Core Team 

Akhil S Bhel

Thomas Lumley

fev function

A data frame with 654 rows and 7 variables:<dl><dt>seqnbr</dt>
<dd>case number (the numbers 1 to 654)</dd>
<dt>subjid</dt>
<dd>subject identification number (unique for each different child)</dd>
<dt>age</dt>
<dd>subject age at time of measurement (years)</dd>
<dt>fev</dt>
<dd>measured forced exhalation volume (liters per second)</dd>
<dt>height</dt>
<dd>subject height at time of measurement (inches)</dd>
<dt>sex</dt>
<dd>subject sex</dd>
<dt>smoke</dt>
<dd>smoking habits ("yes" or "no")</dd>
</dl>

Format

Data from a study of 654 children on the relationship between smoking status and 
lung function (measured by FEV). Each row corresponds to a single clinic visit and contains
information on age, height, sex, FEV, and smoking status.
More information, including a coding key, is available at
<a href='http://www.emersonstatistics.com/datasets/fev.doc'>http://www.emersonstatistics.com/datasets/fev.doc</a>.

FEV dataset — fev

A data frame with 654 rows and 7 variables:<dl>

<dt>seqnbr</dt>
<dd>case number (the numbers 1 to 654)</dd>


<dt>subjid</dt>
<dd>subject identification number (unique for each different child)</dd>


<dt>age</dt>
<dd>subject age at time of measurement (years)</dd>


<dt>fev</dt>
<dd>measured forced exhalation volume (liters per second)</dd>


<dt>height</dt>
<dd>subject height at time of measurement (inches)</dd>


<dt>sex</dt>
<dd>subject sex</dd>


<dt>smoke</dt>
<dd>smoking habits ("yes" or "no")</dd>


</dl>

fev: FEV dataset

Description

Usage

Arguments

Format