Plural of Data: Understanding the Correct Usage

Definition and Plural of Data

What Does “Data” Mean?

Data refers to facts, numbers, or information that are collected and used for reference, analysis, or decision-making. It comes from the Latin word datum, which means “something given.”

Examples:

• The data shows that most users prefer mobile apps.

• We collected data from over 500 participants.

• The scientist analyzed the data before publishing the report.

💡 Simple Definition:

• Data = information or facts used for research, study, or analysis.

Is “Data” Singular or Plural?

This is one of the most debated grammar questions in English.
Here’s the breakdown:

1. In Formal or Scientific English — “Data” Is Plural

When used in academic, scientific, or technical writing, data is considered plural, and datum is singular.

Examples:

• The data are consistent with our hypothesis.

• Each datum was verified before inclusion.

• These data support the research conclusion.

Rule:

Use data are when you’re treating it as several separate pieces of information.

2. In Modern or Everyday English — “Data” Is Singular

In everyday language, data is treated as an uncountable noun, just like information, money, or knowledge.

Examples:

• The data is being uploaded now.

• This data helps us understand customer behavior.

• All the data was stored in the cloud.

Rule:

Use data is when you mean a single body or collection of information.

💡 Quick Tip:

If you can replace data with information and the sentence still sounds correct, treat it as singular.

When to Use “Datum”

Datum is the singular form of data, but it’s rarely used in everyday speech. It appears mostly in scientific, mathematical, or mapping contexts.

Examples:

• Each datum was measured carefully.

• The surveyor used a specific datum point as a reference.

• In statistics, a single datum represents one observation.

💡 Note:

In modern English, people usually say a piece of data instead of a datum.

Example:

• One piece of data supports the theory. ✅

• One datum supports the theory. (formal, rare)

Examples of Data and Plural of Data in Sentences

Formal (plural):

1. The data are being analyzed by our research team.

2. These data provide new insights into climate change.

3. Several data were omitted due to inaccuracy.

Modern (singular):

1. The data is saved automatically to the cloud.

2. This data helps improve product design.

3. The data was collected from multiple devices.

With quantifiers:

1. A piece of data was missing from the report.

2. We reviewed several sets of data from last year.

3. Huge amounts of data are generated daily online.

Common Collocations with “Data”

Here are some natural word combinations that often appear with data:

Verb + Data