R Dataset / Package COUNT / lbwgrp
Attachment  Size 

dataset57559.csv  153 bytes 
Documentation 

On this Picostat.com statistics page, you will find information about the lbwgrp data set which pertains to lbwgrp. The lbwgrp data set is found in the COUNT R package. Try to load the lbwgrp data set in R by issuing the following command at the console data("lbwgrp"). This may load the data into a variable called lbwgrp. If R says the lbwgrp data set is not found, you can try installing the package by issuing this command install.packages("COUNT") and then attempt to reload the data with library("COUNT") followed by data("lbwgrp"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing lbwgrp at the commandline which should display the entire dataset. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the lbwgrp R data set. The size of this file is about 153 bytes. lbwgrpDescriptiongrouped format of the lbw data. The observation level data come to us form Hosmer and Lemeshow (2000). Grouping is such that lowbw is the numerator, and cases the denominator of a binomial model, or cases may be an offset to the count variable, lowbw. Birthweights under 2500g classifies a low birthweight baby. Usagedata(lbwgrp) FormatA data frame with 6 observations on the following 7 variables.
Detailslbwgrp is saved as a data frame. Count models: count response=lowbt; offset=log(cases); Binary: binomial numerator= lowbt; binomial denominator=cases SourceHosmer, D and S. Lemeshow (2000), Applied Logistic Regression, Wiley ReferencesHilbe, Joseph M (2007, 2011), Negative Binomial Regression, Cambridge University Press Hilbe, Joseph M (2009), Logistic Regression Models, Chapman & Hall/CRC Examplesdata(lbwgrp) glmgp < glm(lowbw ~ smoke + race2 + race3 + offset(log(cases)), family=poisson, data=lbwgrp) summary(glmgp) exp(coef(glmgp)) library(MASS) glmgnb < glm.nb(lowbw ~ smoke + race2 + race3, data=lbwgrp) summary(glmgnb) exp(coef(glmgnb))  Dataset imported from https://www.rproject.org. 
Picostat Manual 

How To Register With a Username
How To Register With Google Single Sign On (SSO)
How To Login With a Username and Password
How To Login With Google Single Sign On (SSO)
How To Import a Dataset
How To Perform Statistical Analysis with Picostat
How To Use Educational Applications with Picostat

Recent Queries For This Dataset 

No queries made on this dataset yet. 
Title  Authored on  Content type 

R Dataset / Package MASS / Pima.tr2  March 9, 2018  1:06 PM  Dataset 
OpenIntro Statistics Dataset  ipod  August 9, 2020  12:25 PM  Dataset 
R Dataset / Package boot / frets  March 9, 2018  1:06 PM  Dataset 
R Dataset / Package HSAUR / CYGOB1  March 9, 2018  1:06 PM  Dataset 
OpenIntro Statistics Dataset  COL  August 9, 2020  2:30 PM  Dataset 