STEM University — Prove skills by building

Your Work

A calculated metric is a computable formula object — an expression tree evaluated over a population. Build the formula, predict the values, choose the placement that matches your intent. The gate runs the math on the full event stream; this workspace shows a 20-event preview.

Date range & preview

Full window · preview slice has 20 of 20 events. Gate uses the full ~3,700-event stream filtered by the same range.

Revenue

$108.88

Visits

Orders

Page views

Bounces

RPV

$15.55

AOV

$54.44

Bounce rate

0.571

Sticky rate

0.429

Categories

Formula composer

Metric A

Operator

Metric B

Revenue (108.88) / Visits (7.00) = 15.55

Computed live from the preview slice. Change the date range or operands to see the value move.

Predict the full-stream values

The preview shows a 20-event slice. Use it as a sample to predict what the gate will compute on the full 3700+ event stream over your chosen date range.

RPV (Revenue / Visits)

AOV (Revenue / Orders)

Mean revenue per category

Sticky rate (1 − BR)

Distinct categories (integer)

Choices the formula tree exposes

If Visits[DR] = 0 in some cell, what does Revenue / Visits return?

For “average revenue-plus-orders per visit”, which expression tree is math-correct?

For “Chrome revenue per total page-view” (share-of-all), where do you put the segment?

Which category has the highest total Revenue?

Preview values shown next to each option; gate uses full stream.

For Average Order Value (Revenue and Orders), which operator?

Does marking a calculated metric as favorite mean it’s approved?

Govern

Metric name

Tags (comma-separated)

Description

Approved for production

Approver is a recognized governance owner

Evaluation

Practice checks are unlimited and don’t count toward your grade. Final submit is one-time and generates your certificate.

Practice the workspace, ask Dr. Okoye anything, and submit when you're ready. The grade lives in the workspace, not the chat.