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  4. Is 'data' singular or plural?
Vocabulary & Precision

Is 'data' singular or plural?

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In English, the word data can be treated as singular or plural depending on the context — and that’s where many writers get confused.

Everyday and Informal Use: Singular

In most general, informal, or modern writing, data is treated as a noncount noun, like information or evidence. It refers to a body of knowledge, not individual parts.

  • This data shows how students perform over time.
  • The data is accurate and complete.
  • Her data was lost after the system crash.

📌 In these examples, “data” behaves like a mass noun and takes a singular verb.

Scientific or Formal Use: Plural

In more technical or academic contexts, especially in science or statistics, data is treated as the plural form of “datum”, and used with plural verbs.

  • These data are statistically significant.
  • We analyzed the data and found that they were consistent with the hypothesis.
  • Many data have not yet been reviewed.

📌 This use is more traditional, and preferred in disciplines like research, economics, or academia.

💡 Tip

  • Data = Information → Singular
  • Data = Many Pieces → Plural

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