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Crucial Exams

CompTIA Data+ DA0-002 (V2) Practice Question

A data analyst is exploring a CustomerOrders dataset that includes OrderID, ShipDate, and ReturnDate columns. The analyst runs a check for missing values and discovers that the ReturnDate column has a high percentage of nulls. Upon investigating, the analyst finds that a ReturnDate is null if, and only if, an order has not been returned. Which of the following is the BEST description of this situation?

  • A failure in the data collection system is preventing ReturnDate from being recorded for a large subset of orders.

  • The ReturnDate column should be imputed with the ShipDate to ensure the dataset is complete for modeling.

  • The missing values are structurally expected and indicate that the ReturnDate is not applicable to those orders.

  • The data is Missing Completely at Random (MCAR), and the nulls should be removed before analysis.

CompTIA Data+ DA0-002 (V2)
Data Acquisition and Preparation
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