Multiple choice technology databases

What is skewed data column?

  1. Columns that contains values with less variation in the number of duplicates

  2. Columns that contains values with large variation in the number of duplicates

  3. Columns that contains values with no variation in the number of duplicates

  4. Columns that contains values with ZERO variation in the number of duplicates
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B Correct answer
Explanation

A skewed data column contains values that are not evenly distributed, meaning there is a large variation in the frequency (number of duplicates) of different values. Distractors referring to less, no, or zero variation describe uniform or low-variance distributions instead of skewness.

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