Facebook page administrators use 
If you're already familiar with a web analytics program like Google Analytics, analyzing insights data will be a cakewalk for you. Remember, extracting the right information from an analytics database is a skill.
If you have a brand new page, you may not find any insights data on your page. Let's get started and see how we can grow our Facebook page with the help of useful analytics data supplied by page insights.
To access page insights data, click the Insights option on your Facebook Page as shown below.
Total Views - It is one of the most important metrics for any web page. In simple words, you get to know the number of fans landing on your Facebook page on any given day.
Whether it's mid-week or a weekend holiday, you can know the number of visitors reaching your page through this metric.
You can further break down this report on a per-day, per-week, or per-month basis to get a broader picture. This way you can get a fair idea about the most promising days in a week or a month.
If you take a longer period, you can see which months gave you the most traffic. This may help you in understanding the seasonal traffic rush. Once you've found the days you get the most traffic, you can concentrate your marketing efforts on those days for maximum results.
Page Likes - Just knowing about the count of visitors doesn't give you much information about how fans behave when they interact with your page content. There's a big difference between a visit and a highly engaged visit. If the majority of your visitors fall into the latter category, then you're going in the right direction.
Page Likes report clearly shows when and which visitors are liking your page. This extremely valuable data gives you insights into the type of content your page fans like the most.
This way you can create a similar type of content to get more likes from fans. You can export this data in an excel sheet and can assess it offline to get more insights about page likes.
Post Reach - Now this is icing on the cake. Facebook insight delivers post-reach data of page visitors to complete your web analytics exercise. It helps you analyze the reach of any given post.
Administrators can easily visualize how much visibility a specific post has attained. This granular reach data for every post also enables you to get a fair idea about the type of content you need to create for your audience.
In other words, this is one of the best metrics to understand what your page subscribers like the most. It also helps you find the correct posting time so that it reaches the maximum number of subscribers.
Page Followers - Data of Facebook page followers is one of the most important pieces of information a page owner wants to analyze. You get this data quite easily in your Facebook Insights dashboard.
Whether it is unfollowing events or the data associated with organic and paid followers, you get the information about each one of them in a graphical format.
You can also adjust the time to visualize and analyze how your page followers are growing over time. It also shows the spike and dips in the page following within the entire timeline.
With some clever data crunching Facebook administrators can deliver better results for their company's Facebook page. So what are you waiting for? Dive into the wonderful world of Facebook page insights and pump new life into your Facebook page.