Discuss CompTIA DA0-002 Exam Topic 4 Question 19

A data analyst needs to identify outliers from a given dataset. Which of the following visualizations is the best way to identify outliers?

ABox plot

BScatter plot

CGantt chart

DWaterfall chart

Suggested Answer: A

This question falls under the Visualization and Reporting domain, focusing on selecting the appropriate visualization to identify outliers in a dataset.

Box plot (Option A): A box plot displays the distribution of data, including the median, quartiles, and outliers (data points beyond the whiskers), making it the best choice for identifying outliers.

Scatter plot (Option B): A scatter plot shows relationships between two variables, and while outliers may be visible, it's not specifically designed for outlier detection.

Gantt chart (Option C): Gantt charts are for project scheduling, not suitable for outlier identification.

Waterfall chart (Option D): Waterfall charts show cumulative changes (e.g., financial contributions), not designed for outlier detection.

The DA0-002 Visualization and Reporting domain emphasizes 'translating business requirements to form the appropriate visualization,' and a box plot is the standard visualization for identifying outliers.

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22 comments · newest first

Bobbye 2 days ago

I agree! Box plots highlight the extremes well.

Hannah 8 days ago

I think A) Box plot is the best choice. It shows outliers clearly.

Demetra 13 days ago

I agree with A. It's the most common method for spotting outliers.

Vivienne 18 days ago

A) Box plot is straightforward. I feel confident about that answer.

Catina 23 days ago

C) Gantt chart? No way! That's not for outliers.

Denny 28 days ago

B) Scatter plot could work too, but not as effectively as a box plot.

Lenny 1 month ago

Definitely A! The whiskers help identify those extreme values.

Hollis 1 month ago

I think A) Box plot is the best choice. It clearly shows outliers.

Ramonita 1 month ago

Are we sure about the box plot? I thought scatter plots were more reliable.

Dante 2 months ago

A box plot is the classic choice, can't argue with that!

Amos 2 months ago

Wait, Gantt charts for outliers? That sounds off...

Ashley 2 months ago

I think B) Scatter plot works too, but A is better.

Chu 2 months ago

Definitely A) Box plot! It's perfect for spotting outliers.

Arletta 2 months ago

Not sure if box plots are always the best, what about context?

Alex 2 months ago

Box plots are the classic choice, can’t argue with that!

Elvis 3 months ago

Wait, Gantt charts can’t show outliers, right?

Ula 3 months ago

I think B) Scatter plot works too.

Hyun 3 months ago

Definitely A) Box plot for outliers!

Stefanie 3 months ago

I definitely remember box plots being mentioned in class for outlier detection, but I wonder if scatter plots could also highlight them in a different way.

Callie 3 months ago

Gantt charts and waterfall charts don't seem relevant for outlier detection, but I can't recall if scatter plots are as effective as box plots.

Teddy 4 months ago

I'm not entirely sure, but I remember practicing with scatter plots for identifying trends and outliers. Maybe it could work too?

Vivan 5 months ago

I think a box plot is the best choice because it clearly shows the quartiles and any points outside the whiskers as outliers.

CompTIA DA0-002 Exam - Topic 4 Question 19 Discussion