I’m working my way through this book, Data Analysis Using SQL and Excel, at the moment and chapter 6 is all about survival and retention modelling. I learn best when I can attack real life problems, so I took some of the lessons from this chapter and applied them to the MailChimp email data I already had in a MySQL database.
This post takes it a step further by looking at subscriber behaviour within the email campaign data. What can we say about how long people remain active subscribers? For a subscriber who has been active for a given length of time, how likely are they to continue being active?
This post digs deeper into the MailChimp data which I analyzed in my previous post. In this analysis, I’ve focused on the distribution of subscribers and what was the most recent date they opened an email.
Specifically, I wanted to answer:
What is the distribution of subscribers by campaign date that opened an email in 2014?
And what are their email addresses?
The way I approached this problem was to break it down into its constituent parts, tackle each of those and then build that back up into a single query.
This post shows how I analyzed a MailChimp email list, including all the data from weekly newsletters for 2014, using MySQL. It was inspired by this excellent tutorial: Performing cohort analysis by Micheal Herman. The email list I’m working with consists of about 18,000 subscribers.
I wanted to answer questions such as:
How many emails do active subscribers open on average?
How active are the subset of users who bought a product during the digital flash sale in March of this year?
The idea originated from discussions with my wife about the tedium of preparing month-end website performance reports for her content management clients. This dashboard was a solution to streamline the monthly web reporting and offer insights that might otherwise be missed. Rather than having to visit Google Analytics for each website in turn and click around gathering the necessary data, this pulls it all together in one place.
Earlier this year I worked with The Write Life team to develop some behind-the-scenes sales data analysis during their 3-day digital bundle sale. The team wanted a simple way of gauging progress and seeing how the different sales channels fared as the sale took place.