There was a download of RATS Standard 8.3 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
The latest version of the software can be installed on PCs running Windows 7/8/10/11, 32-bit. Also the software is known as "WinRATS Standard". The RATS Standard installer is commonly called ratsv8_std.exe or WinRATS Std 8.2.exe etc. This software was originally created by Estima. The most popular versions of the tool 8.3, 8.2 and 8.1. The program lies within Education Tools, more precisely Science Tools.
From the developer:
RATS Standard is a comprehensive econometrics and time series analysis program. The program provides linear and non-linear least squares, forecasting, SUR and ARIMA models. It can handle time series of virtually any frequency, including daily and weekly, as well as panel and cross-section data.
You may want to check out more software, such as Standard Notes, Magicbit DVD Ripper Standard or REM Rate, which might be related to RATS Standard.