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Date: 14-4-2021
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Date: 18-2-2021
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Gibrat's distribution is a continuous distribution in which the logarithm of a variable has a normal distribution,
(1) |
defined over the interval . It is a special case of the log normal distribution
(2) |
with and , and so has distribution function
(3) |
The mean, variance, skewness, and kurtosis excess are then given by
(4) |
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(5) |
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(6) |
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(7) |
REFERENCES:
Gibrat, R. Les Inégalités économiques. Paris: Recueil Sirey, 1931.
Mansfield, E. "Entry, Gibrat's Law, Innovation, and the Growth of Firms." Amer. Econ. Rev. 52, 1023-1051, 1962.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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في مستشفى الكفيل.. نجاح عملية رفع الانزلاقات الغضروفية لمريض أربعيني
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