The error of rejecting the null hypothesis when it is true is known as?

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The error of rejecting the null hypothesis when it is true is known as? Answer: Type-1 error

In hypothesis testing, Type I Error occurs when we wrongly reject a true null hypothesis. It is also called the level of significance of a test.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.