On Fri, Oct 21, 2011 at 7:26 AM, Castelo michelcastelobranco@gmail.comwrote:
On 21-10-2011 03:06, Andreas K. wrote:
the median is always smaller than the average.
There's no such relation between median and average:
{20, 21, 24, 26, 28}: Median (24) > Average (23.8) {20, 22, 24, 26, 28}: Median (24) = Average (24) {20, 23, 24, 26, 28}: Median (24) < Average (24.2)
Andreas wrote in full:
For the relative position of mode, median and average in a right-skewed distribution see http://en.wikipedia.org/wiki/File:Comparison_mean_median_mode.svghttp://en.wikipedia.org/wiki/File:Comparison_mean_median_mode.svg-- the median is always smaller than the average.
The four distributions that you give definitely are not all right-skewed.