DAC Study Guide 2026
Everything you need to pass the DAC exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 DAC Exam Format at a Glance
65
Questions
90 min
Time Limit
70.00%
Passing Score
📚 DAC Topics to Study (45)
Big Data & Cloud Analytics · 7 cardsBig Data & Cloud Analytics · 7 cardsBig Data & Cloud Analytics · 7 cardsBig Data & Cloud Analytics · 7 cardsData Analysis Fundamentals · 7 cardsData Analysis Fundamentals · 7 cardsData Analysis Fundamentals · 7 cardsData Analysis Fundamentals · 7 cardsData Ethics & Privacy · 7 cardsData Ethics & Privacy · 7 cardsData Ethics & Privacy · 7 cardsData Tools and Visualization · 7 cardsData Tools and Visualization · 7 cardsData Tools and Visualization · 7 cardsData Tools and Visualization · 7 cardsData Visualization & Reporting · 7 cardsData Visualization & Reporting · 7 cardsData Visualization & Reporting · 7 cardsData Visualization & Reporting · 7 cardsFundamentals of Data Analytics · 7 cardsFundamentals of Data Analytics · 7 cardsFundamentals of Data Analytics · 7 cardsFundamentals of Data Analytics · 7 cardsMachine Learning & Predictive Analytics · 7 cardsMachine Learning & Predictive Analytics · 7 cardsMachine Learning & Predictive Analytics · 7 cardsMachine Learning & Predictive Analytics · 7 cardsBig Data & Cloud Analytics · 6 cardsDAC Business Intelligence & Analytics Strategy · 6 cardsDAC Business Intelligence & Analytics Strategy · 6 cards
✍️ Sample DAC Questions & Answers
1. Which metric summarizes model performance across all classification thresholds?
✓ AUC-ROC
The AUC-ROC measures a classifier's ability to rank positives above negatives across every threshold.
2. A histogram is most useful for showing what about a single numeric variable?
✓ Its distribution
Histograms group values into bins to reveal the shape of a distribution.
3. In Power BI or Tableau, what is the main benefit of drill-down functionality?
✓ Letting users navigate from summary to detailed levels
Drill-down lets users move from aggregated summaries into finer detail.
4. What does standard deviation measure in a dataset?
✓ The average distance of data points from the mean
Standard deviation quantifies how spread out the data values are around the mean — a larger value indicates more variability.
5. A report double-counts revenue because the same order appears twice. What cleaning step fixes this?
✓ Deduplication
Deduplication removes repeated records so each entity is counted once.
6. What is 'data-ink ratio' as described by Edward Tufte?
✓ The proportion of ink used to display actual data versus decoration
Data-ink ratio measures how much of a chart's ink represents real data versus non-essential decoration.
🎯 Free DAC Practice Tests
Data Tools and Visualization · 7 questionsData Tools and Visualization · 7 questionsData Tools and Visualization · 7 questionsBig Data & Cloud Analytics · 7 questionsBig Data & Cloud Analytics · 7 questionsBig Data & Cloud Analytics · 7 questionsBig Data & Cloud Analytics · 7 questionsData Visualization & Reporting · 7 questionsData Visualization & Reporting · 7 questionsData Tools and Visualization · 7 questions
📖 DAC Guides & Articles
Your DAC Study Path
1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation
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