Factory Data Analytics Flashcards
7 cards from real SACA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Factory Data Analytics flashcards as text
What is the primary risk of using only accuracy as the evaluation metric for a factory defect detection model when defects are rare?
Answer: A model predicting 'no defect' always will achieve high accuracy but miss all defects
With imbalanced classes, a naive model that never predicts a defect can still achieve 99%+ accuracy while providing zero practical value.
In factory analytics, what is a digital twin primarily used for?
Answer: Creating a virtual simulation of a physical asset for analysis and optimization
A digital twin is a virtual model of a physical asset that mirrors real-time behavior, enabling what-if analysis and predictive optimization.
Which edge computing benefit is most critical for real-time quality inspection on a high-speed production line?
Answer: Reduced latency by processing data locally near the source
Edge computing processes data at or near the source, eliminating round-trip cloud latency that would be unacceptable for millisecond-level inspection decisions.
A process engineer wants to understand which input variables most influence yield. Which analytical technique is most appropriate?
Answer: Design of Experiments (DoE) with main effects analysis
Design of Experiments systematically varies input factors to measure their individual and interaction effects on a response variable like yield.
What does the 'Performance' component of OEE measure?
Answer: The ratio of actual production speed to the theoretical maximum speed
OEE Performance measures how fast the machine runs compared to its ideal speed, capturing slow cycles and minor stops.
Which data governance practice ensures that factory sensor data can be traced back to its source, collection time, and transformations applied?
Answer: Data lineage tracking
Data lineage documents the origin, movement, and transformation of data throughout its lifecycle, supporting auditability and troubleshooting.
A factory implements a rules-based alert that triggers when pressure exceeds 150 PSI. This is an example of which analytics type?
Answer: Threshold-based descriptive monitoring
A fixed threshold alert describes current conditions and flags deviations in real time without predicting future states or recommending actions.