The following is a short extract from our book, Researching UX: Analytics, written by Luke Hay. It’s the ultimate guide to using analytics for improved user experience. SitePoint Premium members get access with their membership, or you can buy a copy in stores worldwide.
To understand why your users behave the way they do, you first need to get to know them. You may make assumptions about who those users are, but you should be constantly challenging those assumptions, or at least be backing them up with facts...
https://www.sitepoint.com/getting-to-know-your-users-with-analytics/