enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Kurtosis - Wikipedia

    en.wikipedia.org/wiki/Kurtosis

    Larger kurtosis indicates a more serious outlier problem, and may lead the researcher to choose alternative statistical methods. D'Agostino's K-squared test is a goodness-of-fit normality test based on a combination of the sample skewness and sample kurtosis, as is the Jarque–Bera test for normality.

  3. Kurtosis risk - Wikipedia

    en.wikipedia.org/wiki/Kurtosis_risk

    Kurtosis risk applies to any kurtosis-related quantitative model that assumes the normal distribution for certain of its independent variables when the latter may in fact have kurtosis much greater than does the normal distribution. Kurtosis risk is commonly referred to as "fat tail" risk. The "fat tail" metaphor explicitly describes the ...

  4. Higher-order statistics - Wikipedia

    en.wikipedia.org/wiki/Higher-order_statistics

    HOS are particularly used in the estimation of shape parameters, such as skewness and kurtosis, as when measuring the deviation of a distribution from the normal distribution. In statistical theory , one long-established approach to higher-order statistics, for univariate and multivariate distributions is through the use of cumulants and joint ...

  5. D'Agostino's K-squared test - Wikipedia

    en.wikipedia.org/wiki/D'Agostino's_K-squared_test

    For example even with n = 5000 observations the sample kurtosis g 2 has both the skewness and the kurtosis of approximately 0.3, which is not negligible. In order to remedy this situation, it has been suggested to transform the quantities g 1 and g 2 in a way that makes their distribution as close to standard normal as possible.

  6. Jarque–Bera test - Wikipedia

    en.wikipedia.org/wiki/Jarque–Bera_test

    In statistics, the Jarque–Bera test is a goodness-of-fit test of whether sample data have the skewness and kurtosis matching a normal distribution. The test is named after Carlos Jarque and Anil K. Bera. The test statistic is always nonnegative. If it is far from zero, it signals the data do not have a normal distribution.

  7. The psychology of food aversions: Why some people don't grow ...

    www.aol.com/lifestyle/psychology-food-aversions...

    For example, I love mushrooms, but many of my friends hate them," she says. "If the food aversion is related to distress, such as significant anxiety, and interferes with functioning, then it ...

  8. Here’s Why Stress Can Cause You to Run for the Bathroom - AOL

    www.aol.com/lifestyle/why-stress-cause-run...

    “The problem is when this happens often, at least three days a week of more than 12 weeks,” Dr. Farhadi says. “Then we would consider IBS or something else.” How to treat diarrhea from stress

  9. Multimodal distribution - Wikipedia

    en.wikipedia.org/wiki/Multimodal_distribution

    The kurtosis is here defined to be the standardised fourth moment around the mean. The value of b lies between 0 and 1. [26] The logic behind this coefficient is that a bimodal distribution with light tails will have very low kurtosis, an asymmetric character, or both – all of which increase this coefficient. The formula for a finite sample ...