CompTIA · DA0-001
CompTIA Data+ validates the skills required to transform business requirements into data-driven decisions by mining, manipulating, and analyzing complex datasets. It covers the full data lifecycle including statistical methods, visualization, and data governance and quality standards.
Practice Questions
700
≈ 7 practice exams
Duration
90 minutes
Passing Score
675/900
Difficulty
AssociateLast Updated
Mar 2026
Use this DA0-001 practice exam to prepare for CompTIA Data+ (DA0-001) with realistic questions, detailed explanations, and focused study modes. The practice bank includes 700 questions for CompTIA DA0-001, so you can review the exam steadily instead of relying on one long cram session.
As you practice, pay extra attention to recurring topics such as Data Concepts and Environments, Data Mining, Data Analysis, Visualization, and Data Governance, Quality, and Controls. Start with short sessions to identify weak areas, then move into timed quizzes once your accuracy is consistent.
The explanations are especially useful when you want to connect exam wording to the responsibilities and scenarios described in the official certification guidance. Use the free preview first, then unlock the full question bank when you are ready to build a complete study routine.
CompTIA Data+ (DA0-001) is an entry-level, vendor-neutral certification that validates the ability to analyze, interpret, and communicate business data effectively. The certification proves competency in transforming business requirements into data-driven decisions through data mining, manipulation, and analysis of complex datasets. It covers the full data lifecycle, including statistical methods, data visualization, and governance and quality standards. This certification is uniquely positioned as the only entry-level, hands-on analytics certification that does not focus on a single vendor's tools, making it accessible to professionals transitioning into data analytics roles.
CompTIA Data+ targets early-career professionals seeking to advance into data analytics roles. Ideal candidates include business analysts, report developers, and professionals with 18-24 months of experience in roles involving data analysis, reporting, or business analytics. The certification is also suitable for career changers with basic analytics exposure, IT professionals transitioning to data roles, and individuals with fundamental understanding of statistics and data visualization who want formal credential validation.
While CompTIA Data+ has no formal prerequisites, the certification is designed for candidates with 18-24 months of practical experience in a report, business analyst, or similar analytical role. Recommended prerequisite knowledge includes exposure to databases and analytical tools, a basic understanding of statistics and probability, and hands-on experience with data visualization tools. Familiarity with spreadsheet applications (Excel) and SQL concepts is beneficial, though not mandatory. Candidates should have some exposure to business analytics workflows and report creation.
The CompTIA Data+ exam (DA0-001) consists of a maximum of 90 scored questions, combining multiple-choice (single and multiple response) and performance-based question (PBQ) types. The exam is delivered online or in-person at Pearson VUE testing centers and must be completed within 90 minutes. Performance-based questions require hands-on skills such as dataset manipulation, drag-and-drop interactions, and scenario analysis. The exam uses scaled scoring on a scale of 100-900 points, with a passing score of 675. Non-native English speakers may be eligible for extra testing time, and ADA accommodations are available with proper documentation.
CompTIA Data+ certification significantly enhances employability in the rapidly growing data analytics field. Certified professionals qualify for roles including Data Analyst, Business Analyst, Business Intelligence Specialist, Marketing Analyst, and reporting specialists. The current job market shows over 193,000 U.S. job postings seeking data analysis, data mining, and data visualization skills, with many entry-level positions available. Salary expectations range from $45,600 for junior professionals to $95,200+ for experienced analysts, with experienced senior data professionals earning $110,000 or more. As a vendor-neutral credential, Data+ is recognized across industries and demonstrates data literacy—a critical skill for career advancement and mobility in today's data-driven economy. The certification differentiates candidates in competitive job markets and serves as a foundation for advancing to more specialized certifications or senior analytics roles.
5 sample questions with answers and explanations. The full bank has 700 questions, enough for 7 full-length practice exams.
Preview — answers shown1. Contoso collected customer satisfaction ratings on a scale from Very Dissatisfied to Very Satisfied. What type of data is this? (Select one!)
Explanation
Ordinal data has a meaningful order but unequal or unmeasurable intervals between values. Satisfaction ratings have a clear ranking from least to most satisfied, but the difference between levels cannot be precisely quantified. Nominal data has categories with no inherent order. Interval data has equal spacing but no true zero. Ratio data has equal spacing and a meaningful true zero.
2. Tailspin is comparing the effectiveness of four different marketing campaigns on average sales conversion rates. Which statistical test should they use? (Select one!)
Explanation
ANOVA (Analysis of Variance) is the correct test for comparing means across three or more groups simultaneously. Two-sample t-test and z-test compare only two groups. Chi-square tests associations between categorical variables, not continuous means.
3. Fabrikam's fraud detection model scored 100 actual fraud cases. It correctly identified 85 fraud cases but also flagged 50 legitimate transactions as fraud. What is the precision of this model? (Select one!)
Explanation
Precision = True Positives / (True Positives + False Positives) = 85 / (85 + 50) = 85/135 ≈ 0.63 or 63%. Precision measures how many of the predicted positive cases were actually positive. The 85% figure represents recall, not precision.
4. Tailspin Toys is analyzing customer reviews using text mining. Which techniques would prepare the text data for analysis? (Select three!)
Multiple correct answersExplanation
TF-IDF (Term Frequency-Inverse Document Frequency) converts text into numerical vectors weighted by term importance across documents. Stemming reduces words to their root form by removing suffixes. Lemmatization reduces words to their base dictionary form using linguistic rules. These three techniques are specifically designed for text preprocessing. One-hot encoding is for categorical variables, binning groups continuous numeric data, and PCA reduces dimensionality of numeric features.
5. A financial analyst at Litware is detecting outliers in customer spending data. Given Q1 = $100 and Q3 = $300, which two values from the dataset represent statistical outliers using the IQR method? (Select two!)
Multiple correct answersExplanation
IQR = Q3 - Q1 = $300 - $100 = $200. Lower fence = Q1 - 1.5 × IQR = $100 - $300 = -$200. Upper fence = Q3 + 1.5 × IQR = $300 + $300 = $600. Any value above $600 or below -$200 is an outlier. For spending data, the lower fence is not relevant since spending cannot be negative. $650 and $750 both exceed the upper fence of $600 and are flagged as outliers. $25, $400, and $550 all fall within the acceptable range between -$200 and $600.
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