In a Chi-square distribution with k degrees of freedom, the variance is equal to 2k and the mean is k. This is a key property used in statistical inference.
If K denotes the degree of freedom, then the variance of Chi-square distribution is?
Review the verified answer and explanation for this SPSC – Sindh Public Service Commission past-paper question on CampusFin.
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.