platykurtic distribution

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• Platykurtic — A description of the kurtosis in a distribution in which the statistical value is negative. When compared to a normal distribution, a platykurtic data set has a flatter peak around its mean, which causes thin tails within the distribution. The… …   Investment dictionary

• platykurtic — /plat i kerr tik/, adj. Statistics. 1. (of a frequency distribution) less concentrated about the mean than the corresponding normal distribution. 2. (of a frequency distribution curve) having a wide, rather flat distribution about the mode. [1900 …   Universalium

• platykurtic — | ̷ ̷ ̷ ̷|kərd.ik adjective Etymology: platy + kurt (from Greek kyrtos bulging, curved) + ic more at leptokurtic 1. of a frequency distribution curve : being less peaked than the corresponding normal distribution curve 2. of a frequency… …   Useful english dictionary

• platykurtic — platy·kur·tic (plat″ĭ kurґtik) [platy + Gr. kurtos convex] pertaining to a probability distribution less concentrated about the mean, i.e., having a broader, flatter peak than the normal distribution with the same variance. Cf.… …   Medical dictionary

• platykurtic — adjective said of a distribution if it has negative kurtosis Syn: platykurtotic Ant: leptokurtic See Also: kurtosis, platykurtosis …   Wiktionary

• Frequency distribution — In statistics, a frequency distribution is an arrangement of the values that one or more variables take in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and… …   Wikipedia

• Kurtosis — In probability theory and statistics, kurtosis (from the Greek word κυρτός, kyrtos or kurtos, meaning bulging) is any measure of the peakedness of the probability distribution of a real valued random variable.[1] In a similar way to the concept… …   Wikipedia

• Mid-range — For loudspeakers, see mid range speaker. In statistics, the mid range or mid extreme of a set of statistical data values is the arithmetic mean of the maximum and minimum values in a data set,[1] or: As such, it is a measure of central tendency.… …   Wikipedia

• excess kurtosis — Kurtosis measures the fatness of the tails of a distribution. Positive excess kurtosis means that distribution has fatter tails than a normal distribution. Fat tails means there is a higher than normal probability of big positive and negative… …   Financial and business terms

• Moment (mathematics) — Second moment redirects here. For the technique in probability theory, see Second moment method. See also: Moment (physics) Increasing each of the first four moments in turn while keeping the others constant, for a discrete uniform distribution… …   Wikipedia

• Sample maximum and minimum — Box plots of the Michelson–Morley experiment, showing sample maximums and minimums. In statistics, the maximum and sample minimum, also called the largest observation, and smallest observation, are the values of the greatest and least elements of …   Wikipedia