R Dataset / Package HistData / Bowley

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How to Compute the Median

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Attachment Size
dataset-34313.csv 497 bytes
Dataset License
GNU General Public License v2.0
Documentation License
GNU General Public License v2.0
R Dataset Help

On this Picostat.com statistics page, you will find information about the Bowley data set which pertains to Bowley's data on values of British and Irish trade, 1855-1899. The Bowley data set is found in the HistData R package. You can load the Bowley data set in R by issuing the following command at the console data("Bowley"). This will load the data into a variable called Bowley. If R says the Bowley data set is not found, you can try installing the package by issuing this command install.packages("HistData") 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 Bowley R data set. The size of this file is about 497 bytes.

Documentation

Bowley's data on values of British and Irish trade, 1855-1899

Description

In one of the first statistical textbooks, Arthur Bowley (1901) used these data to illustrate an arithmetic and graphical analysis of time-series data using the total value of British and Irish exports from 1855-1899. He presented a line graph of the time-series data, supplemented by overlaid line graphs of 3-, 5- and 10-year moving averages. His goal was to show that while the initial series showed wide variability, moving averages made the series progressively smoother.

Usage

data(Bowley)

Format

A data frame with 45 observations on the following 2 variables.

Year

Year, from 1855-1899

Value

total value of British and Irish exports (millions of Pounds)

Source

Bowley, A. L. (1901). Elements of Statistics. London: P. S. King and Son, p. 151-154.

Digitized from Bowley's graph.

Examples

data(Bowley)# plot the data 
with(Bowley,plot(Year, Value, type='b', 
	ylab="Value of British and Irish Exports",
	main="Bowley's example of the method of smoothing curves"))# find moving averages-- use center alignment (requires width=ODD)
require(gtools, warn.conflicts=FALSE)
mav3<-running(Bowley$Value, width=3, align="center")
mav5<-running(Bowley$Value, width=5, align="center")
mav9<-running(Bowley$Value, width=9, align="center")
lines(Bowley$Year[2:44], mav3, col='blue', lty=2)
lines(Bowley$Year[3:43], mav5, col='green3', lty=3)
lines(Bowley$Year[5:41], mav9, col='brown', lty=4)# add lowess smooth
lines(lowess(Bowley), col='red', lwd=2)require(ggplot2, warn.conflicts=FALSE)
qplot(Year,Value, data=Bowley)+geom_smooth()
--

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

All Public Datasets File Size
Test 394 bytes
Q1 332 bytes
prova_Correlatio 593 bytes
profva
test 332 bytes
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