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GRE Review: Data Analysis

Review data analysis for this GRE question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: Data Analysis

Prompt focus: A data set consists of the values 4, 8, 8, 10, and 20. What is the median of the data set?

Why the correct answer works

8

With five ordered values, the middle (third) value is 8.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

The values are already in order: 4, 8, 8, 10, 20. With five values, the median is the third value, which is 8.

Simple analogy

Think of data analysis like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next