R Dataset / Package robustbase / heart

Documentation

On this Picostat.com statistics page, you will find information about the heart data set which pertains to Heart Catherization Data. The heart data set is found in the robustbase R package. You can load the heart data set in R by issuing the following command at the console data("heart"). This will load the data into a variable called heart. If R says the heart data set is not found, you can try installing the package by issuing this command install.packages("robustbase") 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 heart R data set. The size of this file is about 8,859 bytes.


Heart Catherization Data

Description

This data set was analyzed by Weisberg (1980) and Chambers et al. (1983). A catheter is passed into a major vein or artery at the femoral region and moved into the heart. The proper length of the introduced catheter has to be guessed by the physician. The aim of the data set is to describe the relation between the catheter length and the patient's height (X1) and weight (X2).

This data sets is used to demonstrate the effects caused by collinearity. The correlation between height and weight is so high that either variable almost completely determines the other.

Usage

data(heart)

Format

A data frame with 12 observations on the following 3 variables.

height

Patient's height in inches

weight

Patient's weights in pounds

clength

Y: Catheter Length (in centimeters)

Note

There are other heart datasets in other R packages, notably survival, hence considering using package = "robustbase", see examples.

Source

Weisberg (1980)

Chambers et al. (1983)

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection; Wiley, p.103, table 13.

Examples

data(heart, package="robustbase")
heart.x <- data.matrix(heart[, 1:2]) # the X-variables
plot(heart.x)
covMcd(heart.x)
summary( lm.heart <-     lm(clength ~ . , data = heart))
summary(lts.heart <- ltsReg(clength ~ . , data = heart))
--

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

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Attachment Size
dataset-65647.csv 8.65 KB
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0