Improve Phase and Solutions Flashcards
7 cards from real Lean Six Sigma Green Belt Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Improve Phase and Solutions flashcards as text
What is a 'fractional factorial' design used for in DOE?
Answer: To study a subset of all possible factor combinations and reduce runs
Fractional factorial designs study a carefully chosen fraction of all factor combinations, reducing runs while still estimating main effects.
A 5S implementation is underway. Which 'S' focuses on creating rules and schedules to maintain the improved workplace?
Answer: Standardize
Standardize (the 4th S) involves creating standards, procedures, and schedules that sustain the gains from the first three S activities.
In a single-minute exchange of die (SMED) initiative, 'external setup' activities are those that:
Answer: Can only be done while the machine is running
External setup activities can be performed while the machine is still running, unlike internal activities that require the machine to be stopped.
Which statistical test is most appropriate to compare the means of three or more groups in an Improve phase validation?
Answer: One-way ANOVA
One-way ANOVA tests whether the means of three or more independent groups are statistically different.
A kaizen event is best described as:
Answer: A focused, short-duration team workshop to rapidly improve a specific process
A kaizen event (or kaizen blitz) is an intensive, short-duration team effort—typically 3–5 days—to rapidly improve a targeted process area.
Which of the following best describes 'pull' production in a lean system?
Answer: Triggering production only when a downstream process signals demand
Pull production uses downstream demand signals (such as kanban cards) to trigger upstream production, preventing overproduction.
During Improve phase solution selection, a solution scoring matrix (weighted criteria matrix) is used to:
Answer: Objectively compare and rank potential solutions against weighted criteria
A weighted criteria (Pugh) matrix scores each solution alternative against important criteria weighted by importance to enable objective selection.