A retail analyst is comparing the distribution of 'transaction_amount' across three store regions (North, South, East). The dataset is large (1 million rows), and the analyst needs a chart that clearly shows the median, spread, and potential outliers for each region in a single view. Which chart type is most appropriate?

A stacked bar chart of transaction_amount by region

A line chart of transaction_amount over time for each region

Overlaid histograms with transparency

CompTIADataX

Domain 2Objective 1

EDA Methods DY0-001 Practice Questions (Page 1)

Part of the Modeling, analysis, and outcomes domain, which accounts for 24% of the DY0-001 exam. CompTIA does not publish an official question count, but from its 165-minute exam (~65–110 total, ~16–26 in this domain), expect 3–5 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

5concepts

24%of the exam

Questions 1–5

1foundation · easy
A data analyst needs to display the trend of monthly revenue over the past two years. Which chart type is most appropriate?
Select an answer first
2foundation · easy
Which graph type is best for visualizing the relationship between two continuous variables, such as height and weight?
Select an answer first
3application · medium
A retail analyst is comparing the distribution of 'transaction_amount' across three store regions (North, South, East). The dataset is large (1 million rows), and the analyst needs a chart that clearly shows the median, spread, and potential outliers for each region in a single view. Which chart type is most appropriate?
Select an answer first
4foundation · easy
In a dataset used to predict customer churn, which process involves determining which attributes, such as contract length or monthly charges, are most influential?
Select an answer first
5foundation · easy
Which technique is commonly used to quantify the importance of each feature in a dataset for predicting a target variable?
Select an answer first

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EDA Methods DY0-001 Practice Questions (Page 1)

Questions 1–5

A data analyst needs to display the trend of monthly revenue over the past two years. Which chart type is most appropriate?

Which graph type is best for visualizing the relationship between two continuous variables, such as height and weight?

In a dataset used to predict customer churn, which process involves determining which attributes, such as contract length or monthly charges, are most influential?

Which technique is commonly used to quantify the importance of each feature in a dataset for predicting a target variable?

Keep studying — Modeling, analysis, and outcomes