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Questions › IIT JAM › IIT JAM 2026 › Q1
1 mark, −0.333Statistics › Descriptive statistics and dispersion › Skewness and kurtosisEasyabout 1 min

IIT JAM 2026 Question 1: Descriptive statistics and dispersion

If kurtosis is defined as (m4σ4−3)\left(\dfrac{m_4}{\sigma^4}-3\right)(σ4m4​​−3), where m4m_4m4​ is the 4th4^{\text{th}}4th order central moment and σ\sigmaσ is the standard deviation, then its value is positive for

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If kurtosis is defined as (m₄/σ⁴-3), where m₄ is the 4^(th) order central moment and σ is the standard deviation, then its value is positive for (A) a leptokurtic distribution (B) a mesokurtic distribution (C) a platykurtic distribution (D) a normal distribution

Also written as: If kurtosis is defined as (m_4/sigma^4-3), where m_4 is the 4^(th) order central moment and sigma is the standard deviation, then its value is positive for

Descriptive statistics and dispersion has come up 117 times in 6 exams since 2004.

What this question tests

This question is on Skewness and kurtosis, part of Descriptive statistics and dispersion in Statistics.

The shape of a distribution: asymmetry and peakedness.

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