TS Continuous Improvement Techniques 2

Question 1

Which Lean metric measures the ratio of value-added time to total lead time in a process?

Accepted Answer

Process cycle efficiency

Answer

Process cycle efficiency (PCE) is calculated as value-added time divided by total lead time, revealing how much of the process actually adds value.

Question 2

A test team notices recurring defects in integration testing. Which continuous improvement tool would best map the sequence of causes leading to this problem?

Accepted Answer

Fishbone (Ishikawa) diagram

Answer

A fishbone (Ishikawa) diagram systematically maps cause-and-effect relationships, making it ideal for tracing sequential causes of recurring defects.

Question 3

In a Kaizen event, what is the primary timeframe typically targeted for completing improvements?

Accepted Answer

One to five days

Answer

Kaizen events (or blitzes) are focused, rapid improvement activities typically completed within one to five days.

Question 4

Which statistical process control signal indicates a process shift when seven consecutive points appear on the same side of the centerline?

Accepted Answer

Rule of seven

Answer

The 'rule of seven' (Nelson rule) flags a non-random process shift when seven or more consecutive points fall on one side of the mean.

Question 5

A software test team wants to reduce the time between code commit and test execution. Which DevOps/CI metric directly measures this lag?

Accepted Answer

Lead time for changes

Answer

Lead time for changes measures the duration from code commit to production-ready delivery, reflecting pipeline efficiency.

(TS) Test Specialist Certification Practice Test

(TS) Test Specialist Certification Practice Test

TS Continuous Improvement Techniques 2