descriptive statistics

Example 8.42: skewness and kurtosis and more moments (oh my!)

June 27, 2011 |

While skewness and kurtosis are not as often calculated and reported as mean and standard deviation, they can be useful at times. Skewness is the 3rd moment around the mean, and characterizes whether the distribution is symmetric (skewness=0). Kurtos...

R Tutorial Series: Summary and Descriptive Statistics

November 1, 2009 |

Summary (or descriptive) statistics are the first figures used to represent nearly every dataset. They also form the foundation for much more complicated computations and analyses. Thus, in spite of being composed of simple methods, they are essential ...