A .7z file is a compressed folder . To see or use the files inside it, you must first extract (unzip) it .
Once extracted, you are likely to find one of two common technical baselines. Scan your files to see which scenario fits your data: Scenario A: Econometrics & Time Series Data Estima--Home of RATS Econometrics Software AM&RATS 7z
: Right-click the AM&RATS.7z file, hover over 7-Zip , and select Extract to "AM&RATS" . hover over 7-Zip