CST Velocity, Cycle Time & Flow Metrics 3

Question 1

A Scrum Team wants to use a Cumulative Flow Diagram (CFD). What does a widening band in a specific workflow state indicate?

Accepted Answer

A bottleneck or accumulation of work is building up in that state

Answer

A widening band in a CFD state signals that items are accumulating faster than they are leaving, revealing a bottleneck.

Question 2

Which statement about throughput as a flow metric is MOST accurate?

Accepted Answer

Throughput counts the number of items completed per unit of time

Answer

Throughput is a count-based metric: the number of work items completed within a defined time period.

Question 3

A Product Owner wants to forecast when a set of 30 backlog items will be complete. The team's recent throughput is 6 items per sprint. What is the MOST appropriate probabilistic approach?

Accepted Answer

Use a Monte Carlo simulation based on historical throughput distribution

Answer

Monte Carlo simulation uses historical throughput variability to generate probabilistic forecasts rather than single-point estimates.

Question 4

What is the primary risk of optimizing solely for high velocity each sprint?

Accepted Answer

Teams may inflate estimates or cut quality to show more points completed

Answer

Optimizing for velocity as a target creates pressure to inflate estimates or reduce quality rather than deliver real value.

Question 5

In flow metrics, 'arrival rate' refers to:

Accepted Answer

The rate at which new work items enter the workflow system

Answer

Arrival rate measures how many new items are added to the workflow per unit of time, useful for assessing system demand.

(CST) Certified Scrum Trainer Practice Test

(CST) Certified Scrum Trainer Practice Test

CST Velocity, Cycle Time & Flow Metrics 3