My assumption was incorrect

USAGE SUMMARY

The phrase "My assumption was incorrect" is correct and usable in written English.
You can use it when acknowledging that a belief or expectation you had turned out to be wrong. Example: "After reviewing the evidence, I realized that my assumption was incorrect, and I needed to revise my conclusions."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

My assumption was incorrect.

Huffington Post

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

Still, the attack, which began on Saturday when armed militants stormed the mall, killing civilians and taking hostages, made it clear my assumptions were incorrect.

Vice

I was a bit embarrassed that my assumptions were incorrect and decided to simply listen as the man explained how he learned that gay was bad.

HuffPost

However, even if my assumptions are incorrect - such as the presumed conversations between the DoJ rep and John Yoo - the origin of how Guantanamo was chosen at a meeting of Ambassador Prosper's working group is now in the public arena.

Huffington Post

I wasn't always sure this assumption was incorrect.

The Washington Post

Our assumption was incorrect.

International Journal of Emergency Medicine

Unfortunately, their assumption was incorrect.

Huffington Post

However, this assumption was incorrect.

Biology Direct

This assumption was incorrect, although the guidelines were strict and approval was rare.

BMC Health Services Research

After the paper was published the author was informed that this assumption was incorrect.

BMJ Open

When the ANOVA normality assumption was incorrect by the Kolmogorov Smirnov test, the non-parametric Mann–Whitney U test was used.

British Journal of Ophthalmology

Expert writing Tips

Best practice

Use "My assumption was incorrect" when you want to directly acknowledge that a prior belief or expectation you held was proven wrong. This phrase is suitable for both formal and informal contexts.

Common error

While grammatically correct, "My assumption was incorrect" can sound overly formal in casual conversations. Consider using simpler alternatives like "I was wrong" or "I messed up" for a more relaxed tone.

Linguistic Context

The phrase "My assumption was incorrect" functions as a declarative statement acknowledging that a prior belief or expectation was wrong. As Ludwig AI confirms, it is usable in written English. This phrase serves to directly address and correct a previous misunderstanding.

Expression frequency: Rare

Frequent in

News & Media

50%

Science

50%

Formal & Business

0%

Less common in

Academia

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "My assumption was incorrect" is a grammatically sound and usable way to acknowledge that a prior belief was wrong. As Ludwig AI notes, it serves to directly address and correct a misunderstanding. Although it is a relatively rare phrase, with usage spanning across News & Media and Science domains, it maintains a neutral register suitable for both formal and informal communication. When choosing an alternative, "I was wrong in my assumption" provides a similar meaning while placing emphasis on personal error.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I was wrong in my assumption

Replaces "My assumption" with "I", changes "was incorrect" to "was wrong", emphasizing personal error.

My initial assumption proved false

Adds "initial" to specify the timing of the assumption, replaces "was incorrect" with "proved false", creating a more formal tone.

I had an incorrect assumption

Rephrases the sentence to focus on having an incorrect assumption rather than the assumption being incorrect.

The assumption I made was wrong

Rearranges the sentence structure to emphasize the act of making the assumption.

It turned out my assumption was wrong

Adds "It turned out" to indicate a discovery or realization, using "was wrong" instead of "was incorrect".

My understanding was flawed

Substitutes "assumption" with "understanding" and "incorrect" with "flawed", indicating a deeper misunderstanding.

I miscalculated

A concise way of saying the assumption was incorrect, implying a misjudgment or miscalculation.

I was mistaken in what I assumed

Focuses on the act of assuming and being mistaken about it.

I was under a false impression

Replaces "assumption" with "impression", indicating a deceptive appearance or idea.

My premise was faulty

Replaces assumption with premise, suggesting a foundational error in reasoning.

FAQs

What's a simpler way to say "My assumption was incorrect"?

You can use phrases like "I was wrong", "I messed up", or "I was mistaken" as simpler alternatives.

How can I use "My assumption was incorrect" in a formal context?

In a formal context, use "My assumption was incorrect" to acknowledge an error in judgment. For example: "After reviewing the data, "my assumption was incorrect", and revisions are necessary."

Is it better to say "My assumption was incorrect" or "I made an incorrect assumption"?

Both phrases are correct, but "My assumption was incorrect" focuses on the assumption itself, while "I made an incorrect assumption" emphasizes personal responsibility for the error.

What's the difference between "My assumption was incorrect" and "My hypothesis was incorrect"?

"My hypothesis was incorrect" is typically used in scientific or academic contexts when referring to a tested theory or prediction. "My assumption was incorrect" is more general and can apply to any situation where a belief turned out to be false.