Funnel conversion analysis

Advanced Data Analyst

Funnel analysis is a core framework in marketing analytics: it measures how effectively you convert prospects at each stage of a pipeline and surfaces where the biggest losses occur.

You're reviewing a Q1 SaaS marketing funnel. Each row shows the volume at a stage, from Website Visitors at the top down to Customers at the bottom.

Your task:

For each stage below Website Visitors, calculate three metrics relative to the prior stage:

  • Stage conv rate: the fraction of the prior stage's volume that advanced
  • Drop-off count: the absolute number lost between stages
  • Drop-off rate: the fraction of the prior stage's volume that did not advance

Then calculate the overall end-to-end conversion rate from Website Visitors to Customers.

Need some help?

Hint 1

All three metrics compare consecutive stages: each is either a ratio or a difference between one stage's volume and the one directly above it.

Hint 2

Stage conv rate divides the current stage by the prior one. Drop-off rate is its complement. You can calculate it as 1 minus the conversion rate, or directly as the drop-off count divided by the prior stage.

Hint 3

For the overall conversion rate, think about which two stages represent the very start and very end of the funnel, with no intermediate steps involved.

Related function(s)