to skewness, kurtosis provides insight into specific characteristics of a distribution. Various methods exist for quantifying kurtosis in theoretical...
37 KB (5,292 words) - 12:52, 20 November 2024
Beta distribution (section Kurtosis)
α → 0 excess kurtosis = lim β → 0 excess kurtosis = lim μ → 0 excess kurtosis = lim μ → 1 excess kurtosis = ∞ lim α → ∞ excess kurtosis = 6 β , lim...
244 KB (40,655 words) - 08:34, 14 November 2024
the average than is expected for a normal distribution. Kurtosis risk applies to any kurtosis-related quantitative model that assumes the normal distribution...
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Moment (mathematics) (section Kurtosis)
distribution is 3σ4. The kurtosis κ is defined to be the standardized fourth central moment. (Equivalently, as in the next section, excess kurtosis is the fourth...
21 KB (3,066 words) - 15:00, 17 June 2024
and the excess kurtosis being zero. Samples from a normal distribution have an expected skewness of 0 and an expected excess kurtosis of 0 (which is the...
7 KB (901 words) - 07:42, 24 May 2024
deviation a measure of the shape of the distribution like skewness or kurtosis if more than one variable is measured, a measure of statistical dependence...
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3.5.11. Measures of Skewness and Kurtosis". NIST. Retrieved 18 March 2012. "Measures of Shape: Skewness and Kurtosis", 2008–2016 by Stan Brown, Oak Road...
27 KB (3,960 words) - 19:06, 31 May 2024
Zsolt István Kürtösi (born 21 March 1971 in Kiskunfélegyháza) is a Hungarian decathlete and bobsledder. Zsolt Kürtösi at World Athletics v t e v t e...
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distributions of the skewness and kurtosis can themselves be analysed in terms of their means μ1, variances μ2, skewnesses γ1, and kurtosis γ2. This has been done...
9 KB (1,391 words) - 20:28, 27 March 2024
Jarque–Bera test is itself derived from skewness and kurtosis estimates. Mardia's multivariate skewness and kurtosis tests generalize the moment tests to the multivariate...
12 KB (1,624 words) - 06:30, 27 August 2024
L-moment (redirect from L-kurtosis)
analogous to standard deviation, skewness and kurtosis, termed the L-scale, L-skewness and L-kurtosis respectively (the L-mean is identical to the conventional...
19 KB (2,296 words) - 05:01, 22 November 2024
Millimeter cloud radar (section Kurtosis)
so kurtosis is not a good measure of "peakedness." Examples of such shapes can be found in the kurtosis wiki entry. The Doppler radar kurtosis analysis...
43 KB (4,968 words) - 04:38, 19 August 2024
Gaussian signals have zero kurtosis, Super-Gaussian signals have positive kurtosis, and Sub-Gaussian signals have negative kurtosis. The denominator is the...
43 KB (6,689 words) - 12:31, 31 October 2024
deviation (or variance), the minimum and maximum values of the variables, kurtosis and skewness. Descriptive statistics provide simple summaries about the...
8 KB (961 words) - 01:30, 17 October 2024
distribution is a probability distribution that exhibits a large skewness or kurtosis, relative to that of either a normal distribution or an exponential distribution...
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difference between its kurtosis and the kurtosis of a normal distribution, 3 {\displaystyle 3} .: 217 Therefore, the excess kurtosis of the geometric distribution...
35 KB (5,151 words) - 13:52, 29 October 2024
resembles the normal distribution in shape but has heavier tails (higher kurtosis). The logistic distribution is a special case of the Tukey lambda distribution...
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cost. An example of the online algorithm for kurtosis implemented as described is: def online_kurtosis(data): n = mean = M2 = M3 = M4 = 0 for x in data:...
31 KB (5,759 words) - 07:23, 24 October 2024
Unimodality (section Skewness and kurtosis)
}}\leq {\sqrt {3}}.} Rohatgi and Szekely claimed that the skewness and kurtosis of a unimodal distribution are related by the inequality: γ 2 − κ ≤ 6 5...
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truncated mean, it also forms the basis for robust measures of skewness and kurtosis, and even a normality test. Summary statistics Socio-economic decile (for...
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{\gamma ^{2}+1}{\kappa }}} where γ is the skewness and κ is the kurtosis. The kurtosis is here defined to be the standardised fourth moment around the...
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that (where they exist) the skewness and kurtosis of these distribution are constants, as skewness and kurtosis are independent of location and scale parameters...
4 KB (377 words) - 21:34, 26 August 2023
case of the binomial distribution with n = 1. {\displaystyle n=1.} The kurtosis goes to infinity for high and low values of p , {\displaystyle p,} but...
13 KB (2,204 words) - 11:16, 16 September 2024
this law have been calculated: mean 3.440 variance 6.057 skewness 0.796 kurtosis −0.548 For the two-digit distribution according to Benford's law these...
65 KB (7,395 words) - 06:46, 20 November 2024
4 − 3 {\displaystyle \gamma _{2}=\mu _{4}/\sigma ^{4}-3} is the excess kurtosis. However, one can use other estimators for σ 2 {\displaystyle \sigma ^{2}}...
24 KB (3,827 words) - 09:26, 11 June 2024
Friedman. Mardia's test is based on multivariate extensions of skewness and kurtosis measures. For a sample {x1, ..., xn} of k-dimensional vectors we compute...
65 KB (9,519 words) - 21:04, 16 November 2024
characteristics of such a discrete variable (such as the mean, variance, and kurtosis), starting from the formulas given for a continuous distribution of the...
30 KB (4,938 words) - 11:35, 30 October 2024
"J-shaped", or numerically, using quantitative measures such as skewness and kurtosis. Considerations of the shape of a distribution arise in statistical data...
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define the standardized moments which are used to define skewness and kurtosis, respectively. For all n, the nth central moment is homogeneous of degree...
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sample variance, though the optimal scale factor depends on the excess kurtosis of the population (see mean squared error: variance) and introduces bias...
58 KB (10,093 words) - 00:04, 14 November 2024