A leptokurtic distribution has a sharp peak and heavier tails than a normal distribution. For this, the kurtosis (β₂) must be greater than 3. Since β₂ = μ₄ / (μ₂)² and μ₂ = 3.5, the fourth moment μ₄ must be greater than 45.5 to make the distribution leptokurtic.
The second moment about mean of symmetrical distribution is 3.5. What must be the value of fourth moment about mean in order distribution will be lepto kurtic?
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This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ETEA Educational Testing and Evaluation Agency preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.