TY - JOUR AU - Brizzi, Maurizio PY - 2000/01/01 Y2 - 2024/03/29 TI - Detecting skewness and kurtosis by letter values: a new proposal JF - Statistica JA - Stat VL - 60 IS - 2 SE - Articles DO - 10.6092/issn.1973-2201/1133 UR - https://rivista-statistica.unibo.it/article/view/1133 SP - 243-258 AB - In this paper some new indices of sample shape ( skewness and kurtosis) are defined by means of letter values (Turkey, 1977). The letter index of skewness (l.c.s.) is built by fitting the standardized sample midsummaries with a least squares straight line, while the letter index of kurtosis (l.c.k.) is obtained by fitting the pseudosigmas (after a simple transformation), in the same way. A robust modification of the above defined indices is proposed. Finally, an application to a set of geographical data is given, with some comments about the effect of outliers. ER -