R Dataset / Package Ecdat / Computers

On this R-data statistics page, you will find information about the Computers data set which pertains to Prices of Personal Computers . The Computers data set is found in the Ecdat R package. You can load the Computers data set in R by issuing the following command at the console data("Computers"). This will load the data into a variable called Computers. If R says the Computers data set is not found, you can try installing the package by issuing this command install.packages("Ecdat") and then attempt to reload the data with the library() command. 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 Computers R data set. The size of this file is about 253,886 bytes.

Prices of Personal Computers

Description

a cross-section from 1993 to 1995

number of observations : 6259

observation : goods

country : United States

Usage

data(Computers)

Format

A dataframe containing :

price: price in US dollars of 486 PCs
speed: clock speed in MHz
hd: size of hard drive in MB
ram: size of Ram in in MB
screen: size of screen in inches
cd: is a CD-ROM present ?
multi: is a multimedia kit (speakers, sound card) included ?
premium: is the manufacturer was a "premium" firm (IBM, COMPAQ) ?
ads: number of 486 price listings for each month
trend: time trend indicating month starting from January of 1993 to November of 1995.

Source

Stengos, T. and E. Zacharias (2005) “Intertemporal pricing and price discrimination : a semiparametric hedonic analysis of the personal computer market”, Journal of Applied Econometrics, forthcoming.

References

Journal of Applied Econometrics data archive : http://qed.econ.queensu.ca/jae/.

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