wooldridge (version 1.4-2)

cement: cement

Description

Wooldridge Source: J. Shea (1993), <U+201C>The Input-Output Approach to Instrument Selection,<U+201D> Journal of Business and Economic Statistics 11, 145-156. Professor Shea kindly provided these data. Data loads lazily.

Usage

data('cement')

Format

A data.frame with 312 observations on 30 variables:

• year: 1964-1989

• month: 1-12

• prccem: BLS ppi for cement

• ipcem: industrial prod. index, cement

• prcpet: ppi for crude petroleum

• rresc: real residential construction

• rnonc: real nonres. construction

• ip: aggregate index of indus. prod.

• rdefs: real defense spending

• milemp: military employment

• gprc: log(prccem) - log(prccem[_n-1])

• gcem: log(ipcem) - log(ipcem[_n-1])

• gprcpet: log(prcpet) - log(prcpet[_n-1])

• gres: log(rresc) - log(rresc[_n-1])

• gnon: log(rnonc) - log(rnonc[_n-1])

• gip: log(ip) - log(ip[_n-1])

• gdefs: log(rdefs) - log(rdefs[_n-1])

• gmilemp: log(milemp) - log(milemp[_n-1])

• jan: =1 if month == 1

• feb: =1 if month == 2

• mar: =1 if month == 3

• apr: =1 if month == 4

• may: =1 if month == 5

• jun: =1 if month == 6

• jul: =1 if month == 7

• aug: =1 if month == 8

• sep: =1 if month == 9

• oct: =1 if month == 10

• nov: =1 if month == 11

• dec: =1 if month == 12

Notes

Compared with Shea<U+2019>s analysis, the producer price index (PPI) for fuels and power has been replaced with the PPI for petroleum. The data are monthly and have not been seasonally adjusted.

Used in Text: pages 579

Examples

# NOT RUN {
 str(cement)
# }