: Right-click on Part 1 and select "Extract Here" using a tool like WinRAR or 7-Zip . It will automatically pull the data from all five parts.
The file likely refers to a segmented compressed archive (part 5 of 5) containing resources for learning Principal Component Analysis (PCA) . Since the file is part of a set, you generally need all parts (Part 1 through Part 5) in the same folder to extract the full contents. PCA.part5.rar
Do you need help the contents of this specific archive, or StatQuest: Principal Component Analysis (PCA), Step-by-Step : Right-click on Part 1 and select "Extract
In a multi-part series, the final section typically moves beyond theory and into high-level execution: or StatQuest: Principal Component Analysis (PCA)