CompTIA Data+ (DA0-001) — Question 321

A healthcare data analyst notices that one data set in the column for Blood_Pressure contains several outliers that need to be replaced with meaningful values. Which of the following data manipulation techniques should the analyst use?

Answer options

• A. Recode
• B. Impute
• C. Append
• D. Reduction

Correct answer: B

Explanation

The correct answer is B (Impute) because this technique allows for replacing outliers with more meaningful values based on other data points. A (Recode) is used for changing the values of existing categories, C (Append) involves adding data rather than altering it, and D (Reduction) typically refers to reducing the size of a dataset rather than handling outliers.