On this Picostat.com statistics page, you will find information about the koch data set which pertains to Ordinal Data from Koch. The koch data set is found in the geepack R package. You can load the koch data set in R by issuing the following command at the console data("koch"). This will load the data into a variable called koch. If R says the koch data set is not found, you can try installing the package by issuing this command install.packages("geepack") and then attempt to reload the data. 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 koch R data set. The size of this file is about 2,721 bytes.

Ordinal Data from Koch

Description

The koch data frame has 288 rows and 4 columns.

Usage

data(koch)

Format

This data frame contains the following columns:

trt

a numeric vector

day

a numeric vector

y

an ordered factor with levels: 1 < 2 < 3

id

a numeric vector

Examples

data(koch)
fit <- ordgee(ordered(y) ~ trt + as.factor(day), id=id, data=koch, corstr="exch")
summary(fit)

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Dataset imported from https://www.r-project.org.