Data and Statistics

Discover and access data and statistics on a variety of research topics.


Data Requests via the Data Fund

The Data Fund provides JHU researchers the opportunity to make requests for known datasets that are not readily accessible via the library data subscriptions. Each year, the library is able to provide a small amount of funding to a select number of researchers to facilitate their use of secondary data. This data will then be available for one year. Longer periods of access are not typically funded; however, the library may consider renewals on a case-by-case basis, depending on expressed need, available funding, and broader interest by the university.

If you have a specific need for secondary proprietary data without security or access restrictions that cannot be obtained by other means please submit a request using the form below for consideration.

Data Fund Purchase Request Form

Please note that submission of the form is not a guarantee of funding. Applicants will receive communication from the data and statistics consultant who will work with the researcher and the academic liaisons within the researcher's discipline to discuss the next steps for the potential use of Data Fund resources to gain access to secondary data. (Undergraduate researchers must have the endorsement of a faculty member to apply. While funds may be made available for undergraduate research projects in special circumstances, the fund's primary mission is to fund data for faculty and graduate student research.)

Ask a Data Services Specialist a Question

 This Ask Us chat window is monitored Monday-Thursday 12pm-4pm during the summer 2021It will be closed July 5th in observance of the Independence Day holiday.

If you have any questions for Data Services outside of this time, please contact us via email.


Datasets & Statistics - What's the Difference? 

The following is an example of a data set as it appears in a statistical software program.  It is presented with all available variables in one file. The user can manipulate, aggregate and create descriptive statistics as needed.

Raw Data File Displayed in Stata Software Package

Below is a visualization of the data set as statistics (percent of families receiving Temporary Cash Assistance [TANF] by neighborhood). Statistics are presented in an aggregate form already. This could be a table of frequencies, means, rates, charts or graphs. Statistics are information based on previously collected and analyzed data on which conclusions are drawn.

TreeMap showing statistics for the data file above.

Which should I use?

When you want to strengthen a point for a presentation or paper, you would typically use available statistics or you might create your own (there are many table building tools available).  If you're planning to test a hypothesis, develop a comprehensive marketing strategy, assess the effect of a particular treatment - or anything that would require in-depth analysis - then you need a dataset.  Make sure that if you are using existing data or statistics (content that you didn't personally collect or analyze), that you check the authenticity of your sources and that you cite them according to proper conventions for your area of study.

About this guide

This guide is designed to help you find both statistics and datasets.  Some of the resources provided are limited to the Johns Hopkins domain and will require you to log in with your JHED ID and password in order to use them.  However, many data sources that are available from government agencies, think tanks, non-profits, etc. are open access.  This guide is not exhaustive, but designed to provide you with a solid starting point on possible sources. If you are not finding what you are looking for, please email me for assistance (see the box on the left).

Access to Content

If you are on the Johns Hopkins "guest" wireless networks (on both Homewood and JHMI campuses) you will NOT always be able to view full content of subscribed databases unless you use the Virtual Private Network (VPN)

Core Resources

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