Kurtosis Graph Examples. In token of this often the excess kurtosis is presented. Kurtosis is useful in statistics for making inferences for example as to financial risks in an investment.
Lastly a negative value indicates negative skewness or rather a negatively skewed distribution. Var 17435 88 example 1 skewness 0 338384 income skewness 0 084117 no of pers skewness 0 91609 example 1 kurtosis 1 77634 income kurtosis 1 00652 no of pers kurtosis 0 710142 var 12743 36 example 2 skewness 0 253103 income skewness 0 196033 no of pers skewness 0 94066 example 2 kurtosis 2 2004 income kurtosis 3 20243 no of pers kurtosis 1 5 3 4. Image by author notice how these central tendency measures tend to spread when the normal distribution is distorted.
Image by author notice how these central tendency measures tend to spread when the normal distribution is distorted.
The reference standard is a normal distribution which has a kurtosis of 3. A normal distribution has kurtosis exactly 3 excess kurtosis exactly 0. Let us take the example of the following data distribution to illustrate the computation of kurtosis of a leptokurtic distribution. Sample kurtosis is always measured relative to the kurtosis of a normal distribution which is 3.
