Terms of use
RegressIt © is an Excel add-in that performs multivariate descriptive data analysis and multiple linear and logistic regression analysis. The program versions on this site are offered as freeware (closed-source and proprietary but at no charge) in the public interest. You may use it for any personal or institutional or commercial application of data analysis. You may privately redistribute it as-is with attribution, although it is better to share the software via a link to this site to ensure that copies are authentic and up-to-date and accompanied by documentation. You may not post the program file on a public web site nor charge for receiving a copy of it nor modify it nor distribute versions that are modified in any way. A standard disclaimer of warranties and limitation of liability applies. Users and their organizations assume all responsibility for the accuracy, appropriateness, and consequences of analysis performed with it. See the End User License Agreement below for complete details, which are typical for software products in general.
For safety and version control reasons, you are advised to download the software only from this site (or a trusted school site if it is for use in a course), and you should revisit this site periodically to check for news and program updates.
If you have concerns about security, please note that successive versions of RegressIt have been distributed to the public on this web site without incident since 2014, and it is well known. Just google "Excel regression add-in." It has been used in teaching at Duke University and many other schools, and it is also widely used by practitioners. Its only interactions with your computer outside of Excel are to place text on the clipboard or write text to CSV files when interacting with RStudio. It does not embed any executable code in Excel files in which analysis is performed. It merely adds ordinary worksheets to the files. If you want to remove it from your computer, you only need to delete the program file.
Customization of the program could be arranged to fit the needs of schools or organizations, which might include features such as the substitution of another instructor's teaching notes or simplifying of menus. Write to feedback@regressit.com if you would like to discuss such options
Click here to return to the Download page.
RegressIt © is an Excel add-in that performs multivariate descriptive data analysis and multiple linear and logistic regression analysis. The program versions on this site are offered as freeware (closed-source and proprietary but at no charge) in the public interest. You may use it for any personal or institutional or commercial application of data analysis. You may privately redistribute it as-is with attribution, although it is better to share the software via a link to this site to ensure that copies are authentic and up-to-date and accompanied by documentation. You may not post the program file on a public web site nor charge for receiving a copy of it nor modify it nor distribute versions that are modified in any way. A standard disclaimer of warranties and limitation of liability applies. Users and their organizations assume all responsibility for the accuracy, appropriateness, and consequences of analysis performed with it. See the End User License Agreement below for complete details, which are typical for software products in general.
For safety and version control reasons, you are advised to download the software only from this site (or a trusted school site if it is for use in a course), and you should revisit this site periodically to check for news and program updates.
If you have concerns about security, please note that successive versions of RegressIt have been distributed to the public on this web site without incident since 2014, and it is well known. Just google "Excel regression add-in." It has been used in teaching at Duke University and many other schools, and it is also widely used by practitioners. Its only interactions with your computer outside of Excel are to place text on the clipboard or write text to CSV files when interacting with RStudio. It does not embed any executable code in Excel files in which analysis is performed. It merely adds ordinary worksheets to the files. If you want to remove it from your computer, you only need to delete the program file.
Customization of the program could be arranged to fit the needs of schools or organizations, which might include features such as the substitution of another instructor's teaching notes or simplifying of menus. Write to feedback@regressit.com if you would like to discuss such options
Click here to return to the Download page.
End-User License Agreement
This End-User License Agreement (EULA) is a legal agreement between you and the Licensor (Robert Nau) that applies to all versions of the RegressIt Excel add-in (the software) offered and distributed under this license agreement. By downloading, copying, accessing or otherwise using the software you agree to be bound by the general Terms of Use of this End User License Agreement as well as other terms expressly included within the software.
The software is protected by copyright laws and international copyright treaties, as well as other intellectual property laws and treaties. This EULA grants you the right to download the software for personal use or for use within your company or organization. You may not sell, resell, license, rent, lease, lend, or place on a file server or a web page that is accessible by the general public on the internet or otherwise transfer the software for value without written permission of the licensor. You may not remove or alter any logo, trademark, copyright notices, hyperlinks, disclaimers, terms of use or other proprietary notices within the software. You may not modify, de-compile, disassemble or reverse engineer the software.
NO WARRANTIES: THE SOFTWARE AND ANY RELATED DOCUMENTATION ARE PROVIDED TO YOU "AS IS." THE LICENSOR MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND EXPRESSLY DISCLAIMS ALL REPRESENTATIONS, ORAL OR WRITTEN, TERMS, CONDITIONS, AND WARRANTIES, INCLUDING BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. WITHOUT LIMITING THE ABOVE YOU ACCEPT THAT THE SOFTWARE MAY NOT MEET YOUR REQUIREMENTS, OPERATE ERROR FREE, OR IDENTIFY ANY OR ALL ERRORS OR PROBLEMS, OR DO SO ACCURATELY. THIS AGREEMENT DOES NOT AFFECT ANY STATUTORY RIGHTS YOU MAY HAVE AS A CONSUMER.
LIMITATION OF LIABILITY: IN NO EVENT SHALL THE LICENSOR BE LIABLE TO YOU, FOR ANY DAMAGES, INCLUDING ANY LOST PROFITS, LOST SAVINGS, OR ANY OTHER DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR THE INABILITY TO USE THE SOFTWARE INCLUDING ANY EVENTS WHERE WE HAVE BEEN ADVISED OF THE POSSIBILITY OF THESE DAMAGES, OR ANY MISTAKES AND NEGLIGENCE IN DEVELOPING THIS SOFTWARE, OR FOR ANY CLAIM BY ANY OTHER PARTY.
By downloading, accessing and using the software the organization, business, or person bears all risks and responsibility for the quality and performance of this software.
This End-User License Agreement (EULA) is a legal agreement between you and the Licensor (Robert Nau) that applies to all versions of the RegressIt Excel add-in (the software) offered and distributed under this license agreement. By downloading, copying, accessing or otherwise using the software you agree to be bound by the general Terms of Use of this End User License Agreement as well as other terms expressly included within the software.
The software is protected by copyright laws and international copyright treaties, as well as other intellectual property laws and treaties. This EULA grants you the right to download the software for personal use or for use within your company or organization. You may not sell, resell, license, rent, lease, lend, or place on a file server or a web page that is accessible by the general public on the internet or otherwise transfer the software for value without written permission of the licensor. You may not remove or alter any logo, trademark, copyright notices, hyperlinks, disclaimers, terms of use or other proprietary notices within the software. You may not modify, de-compile, disassemble or reverse engineer the software.
NO WARRANTIES: THE SOFTWARE AND ANY RELATED DOCUMENTATION ARE PROVIDED TO YOU "AS IS." THE LICENSOR MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AND EXPRESSLY DISCLAIMS ALL REPRESENTATIONS, ORAL OR WRITTEN, TERMS, CONDITIONS, AND WARRANTIES, INCLUDING BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. WITHOUT LIMITING THE ABOVE YOU ACCEPT THAT THE SOFTWARE MAY NOT MEET YOUR REQUIREMENTS, OPERATE ERROR FREE, OR IDENTIFY ANY OR ALL ERRORS OR PROBLEMS, OR DO SO ACCURATELY. THIS AGREEMENT DOES NOT AFFECT ANY STATUTORY RIGHTS YOU MAY HAVE AS A CONSUMER.
LIMITATION OF LIABILITY: IN NO EVENT SHALL THE LICENSOR BE LIABLE TO YOU, FOR ANY DAMAGES, INCLUDING ANY LOST PROFITS, LOST SAVINGS, OR ANY OTHER DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR THE INABILITY TO USE THE SOFTWARE INCLUDING ANY EVENTS WHERE WE HAVE BEEN ADVISED OF THE POSSIBILITY OF THESE DAMAGES, OR ANY MISTAKES AND NEGLIGENCE IN DEVELOPING THIS SOFTWARE, OR FOR ANY CLAIM BY ANY OTHER PARTY.
By downloading, accessing and using the software the organization, business, or person bears all risks and responsibility for the quality and performance of this software.