31. There are actually ways of measuring " skewness " and certain levels of skewness imply certain statistical restrictions. 32. There are actually ways of measuring " skewness " and certain levels of skewness imply certain statistical restrictions. 33. The null hypothesis is a joint hypothesis of the skewness being zero and the excess kurtosis being zero. 34. Skewness in a data series may sometimes be observed not only graphically but by simple inspection of the values.35. The expressions to calculate the Kurtosis and the Skewness are coming out of mathematical statistics several formulations are used. 36. Rohatgi and Szekely have shown that the skewness and kurtosis of a unimodal distribution are related by the inequality: 37. The skewness , being proportional to the third moment, will be affected more than the lower order moments. 38. Finally, quantify "'levels of skewness "'of the parasites'distribution among hosts. 39. Skew distributions can be mirrored by distribution inversion to change the skewness from positive to negative and vice versa. 40. The variance of the skewness of a random sample of size " n " from a normal distribution is
