Excess Kurtosis Calculation. Most statistical software shift the measurement to be 0 for the normal distribution. Mar 06 2017 Excels kurtosis function calculates excess kurtosis.
Therefore sample kurtosis equals. In a new cell type KURT Highlight the cells where the data are at. For a very large sample very high n the differences between and among n1 n n-1 n-2 and n-3 are becoming negligible and the sample kurtosis formula approximately equals.
Calculate the peakedness of the probability distribution of observed random variables around the mean using this online statistics calculator.
The formula for kurtosis is expressed as the ratio of the fourth moment and variance s 2 squared or squared the second moment of the distribution. S sample standard deviation. Platykurtic distributions have negative excess kurtosis. Excess Kurtosis for Normal Distribution 33 0 The lowest value of Excess Kurtosis is when Kurtosis is 1 13 -2.
