Help Documentation

For quick overview on how to find, obtain, and utilize our data, please consult our Data Use Tutorial. Otherwise, you may search by keyword in our help documentation or browse through the help documentation.

View all NACJD Help documentation.

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Locating Data and Getting the Files You Need

• Frequently Asked Questions About Searching

• How do I obtain a data collection from NACJD?

• How do I search for specific variables?

• When I attempt to access data from home, I get an "access denied" message, even though my institution participates in ICPSR Direct. Why?

• McAffee Antivirus says that a data file on your site has a virus in it. How do I get a virus-free file?

• How do I download data files?

• How do I decompress the files I download from your site?

Study Documentation

• What kind of documentation do you provide, and in what formats?

• What is a codebook?

Data Files

• What kind of data formats does the archive distribute? Do you have SPSS Portable files? Stata? SAS transport?

• How are your data structured? What do you mean by "rectangular" and "card image"?

• How do I interpret a record from an ASCII data file?

Setup Files

• What are setup files?

• How do I use a SAS setup file to interpret ASCII data?

• How do I use an SPSS setup file to interpret ASCII data?

• How do I use a Stata setup file to interpret ASCII data?

Statistical Software

• How can I use your data with GIS software, such as ArcView or MapInfo?

• How can I use NACJD data with statistical packages?

• Where can I find technical support for using statistical packages?

Depositing Data

• How can I archive crime or criminal justice data that I have collected?

• How does your archive prepare a data collection for public release?

General Help

• Frequently Asked Questions

• Do you have a glossary of social science terms?

• How do I report a problem with your Web site?

• Why is the text so small on your Web site?