CompTIA Data+ (DA0-001) — Question 146

Which of the following BEST defines a data outlier?

Answer options

• A. A datapoint that is significantly close to the trend line
• B. A datapoint that has the highest significant number of observations
• C. A datapoint that differs significantly from other observations
• D. A datapoint that is above the trend line

Correct answer: C

Explanation

The correct answer, C, accurately describes a data outlier as a point that deviates significantly from the other data points in a dataset, which can indicate an anomaly. Option A describes a point that is close to the trend line, which does not represent an outlier. Option B refers to frequency rather than deviation, and option D only specifies a point above the trend line without considering the overall distribution of data.