|
| Variable Name | Description | Source of data | Mean | Std. Dev. |
|
| Change in log employment | ln(emp. 2000)–ln(emp. 1970), where emp. is the total number of jobs | REIS | 0.51 | 0.45 |
| Change in log wage/salary | ln(wage 2000)–ln(wage 1970), where wage is the average wage and salary per job, in $ | REIS | 1.56 | 0.16 |
| Number of colleges | Number of institutions of higher educations, academic year 1970-1971 | HEGIS 1970-71 IC | 0.95 | 2.83 |
| Number of large colleges | Number of institutions of higher educations with enrollment of 10,000 students or more, as of fall 1970 | HEGIS 1970-71 IC | 0.06 | 0.38 |
| Number of colleges—Engineering | Number of institutions of higher educations with accredited engineering programs, academic year 1970-1971 | HEGIS 1970-71 IC | 0.09 | 0.39 |
| Number of colleges—Business | Number of institutions of higher educations with accredited business programs, academic year 1970-1971 | HEGIS 1970-71 IC | 0.05 | 0.26 |
| Number of colleges—Medicine | Number of institutions of higher educations with accredited medicine programs, academic year 1970-1971 | HEGIS 1970-71 IC | 0.03 | 0.24 |
| Number of colleges—Doctoral/Master’s | Number of colleges and universities offering doctoral or master’s degrees, academic year 1970-1971 | HEGIS 1970-71 IC; Carnegie 2000 | 0.26 | 0.86 |
| Number of colleges—Baccalaureate | Number of colleges offering baccalaureate degrees but not above, academic year 1970-1971 | HEGIS 1970-71 IC; Carnegie 2000 | 0.17 | 0.51 |
| Number of colleges—Associate’s | Number of colleges offering associate’s degrees and certificate programs but not above, academic year 1970-1971 | HEGIS 1970-71 IC; Carnegie 2000 | 0.23 | 0.69 |
| Number of colleges—Other Carnegie | Number of institutions of higher education in academic year 1970-1971 not classified as doctoral/master’s/baccalaureate/associate’s institutions in Carnegie Classification 2000. | HEGIS 1970-71 IC; Carnegie 2000 | 0.29 | 1.40 |
| Ln(emp70) | Natural log of employment 1970 | REIS | 9.05 | 1.34 |
| Ln(wage70) | Natural log of average wage/salary 1970 | REIS | 8.53 | 0.22 |
| Land area | Land area included (in thousandths of a square kilometer) | 1990 Census U.S. Gazetteer files | 2483818 | 3375585 |
| Employment share of resource sectors | Resource sectors’ employment divided by total employment * 100%, 1970 | REIS | 20.14 | 14.30 |
| Employment share of manufacturing | Manufacturing employment divided by total employment * 100%, 1970 | REIS | 16.56 | 12.88 |
| Undetermined industrial mix | Dummy variable indicating missing data on employment of resource sectors and/or manufacturing sector, 1970 | REIS | 0.13 | 0.33 |
|
County Latitude/Longitude coordinates | 1990 Census U.S. Gazetteer files | | |
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