From the start, it’s difficult to prescribe a method for determining whether your analytics data is incorrect. It’s always good to compare different data sets whenever possible, especially when you have confidence in one. This can mean looking at a raw data view or, in some cases like eCommerce platforms, comparing to advertising platform data. The numbers usually won’t match up exactly for a variety of reasons, but can get you to a higher degree of confidence when you take into consideration the attribution model and data collection methods. Ultimately, nothing beats a full audit of your analytics implementation; this ensures that analytics is installed cleanly on all pages of your site.