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Exam DA0-001 topic 1 question 145 discussion

Actual exam question from CompTIA's DA0-001
Question #: 145
Topic #: 1
[All DA0-001 Questions]

Given the image below:



The data should be cleaned because of the presence of:

  • A. outliers.
  • B. non-parametric data.
  • C. multicollinearity.
  • D. invalid data.
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Suggested Answer: C 🗳️

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Swift_and_Quick
6 months, 3 weeks ago
A. Outliers. The following is a vertical box plot, min is 0, max is 3, Q1 is 1, and Q3 is 3. It seems that the box plot has individual data points (dots) above the upper quartile (Q3) and potentially extending far beyond the upper whisker. These data points represent values that are significantly higher than the bulk of the data, indicating the presence of outliers. Outliers can skew statistical analyses and interpretations, so they often warrant data cleaning to ensure the reliability and accuracy of the results.
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