jtrain: jtrain

In wooldridge: 115 Data Sets from "Introductory Econometrics: A Modern Approach, 7e" by Jeffrey M. Wooldridge

jtrain

Description

Wooldridge Source: H. Holzer, R. Block, M. Cheatham, and J. Knott (1993), “Are Training Subsidies Effective? The Michigan Experience,” Industrial and Labor Relations Review 46, 625-636. The authors kindly provided the data. Data loads lazily.

Usage

data('jtrain')

Format

A data.frame with 471 observations on 30 variables:

• year: 1987, 1988, or 1989

• fcode: firm code number

• employ: # employees at plant

• sales: annual sales, $

• avgsal: average employee salary

• scrap: scrap rate (per 100 items)

• rework: rework rate (per 100 items)

• tothrs: total hours training

• union: =1 if unionized

• grant: = 1 if received grant

• d89: = 1 if year = 1989

• d88: = 1 if year = 1988

• totrain: total employees trained

• hrsemp: tothrs/totrain

• lscrap: log(scrap)

• lemploy: log(employ)

• lsales: log(sales)

• lrework: log(rework)

• lhrsemp: log(1 + hrsemp)

• lscrap_1: lagged lscrap; missing 1987

• grant_1: lagged grant; assumed 0 in 1987

• clscrap: lscrap - lscrap_1; year > 1987

• cgrant: grant - grant_1

• clemploy: lemploy - lemploy[_n-1]

• clsales: lavgsal - lavgsal[_n-1]

• lavgsal: log(avgsal)

• clavgsal: lavgsal - lavgsal[_n-1]

• cgrant_1: cgrant[_n-1]

• chrsemp: hrsemp - hrsemp[_n-1]

• clhrsemp: lhrsemp - lhrsemp[_n-1]

Used in Text

pages 137, 161, 233, 254, 339, 465-466, 479, 486-487, 492, 504, 541-542, 774-775, 786-787, 788, 819.

Source

https://www.cengage.com/cgi-wadsworth/course_products_wp.pl?fid=M20b&product_isbn_issn=9781111531041

Examples

 str(jtrain)

wooldridge documentation built on May 3, 2023, 5:06 p.m.