next up previous contents
Next: Graphical representation Up: Descriptive statistics for univariate Previous: Empirical quantiles   Contents

Example: Summary statistics for the height data


Table: Summary statistics for the sample of height data in Table 2.1
Statistic Symbol Value Comment
sample size $ n$ 11 number of objects/individuals
mean $ \overline{x} $ 174.3cm non-resistant measure of location
standard deviation $ s_x$ 7.9cm non-resistant measure of scale
range $ x_{max}-x_{min}$ 29cm VERY non-resistant measure of scale!
skewness $ b_1$ 0.17 non-resistant measure of skewness
kurtosis $ b_2-3$ 0.003 non-resistant measure of kurtosis
median $ x_{0.5}$ 175cm resistant measure of location
interquartile range $ x_{0.75}-x_{0.25}$ 9cm resistant measure of scale
Yule-Kendall $ \gamma_{YK}$ 0.11 resistant measure of skewness
.



next up previous contents
Next: Graphical representation Up: Descriptive statistics for univariate Previous: Empirical quantiles   Contents
David Stephenson 2005-09-30