I can’t tell easily about the distribution of data points looking at histograms, since I am calling boxplot as in following notation:

In [32]: d[2][8:]

Out[32]: array([98.2507, 99.6293, 100.0359, 100.1859, 100.4691])

Here the elements of my array are 5th, 25, 50, 75, 95th percentile of the original data array, where these are created with a simple calculation before boxplot command is called.

For example when I do, boxplot([5,25,50,75,95]) I get the desired effect exactly. For some reason in my case 2 out of 12 boxplot has fliers instead of whiskers to be drawn. Might this be related to rounding off these numbers?

Thanks.

Gökhan

## ···

On Tue, May 12, 2009 at 5:32 PM, Stephen George <steve_geo@…887…> wrote:

Why don’t you perform a histogram on the data that produced that boxplot, … seeing the shape of that histogram may answer your own question. Is it skewed or normal distribution?

Gökhan SEVER wrote:

Hello,

I construct my boxplots (shown in this figure: http://img204.imageshack.us/img204/7518/boxplot2.png) using 5th, 25th, 50th, 75th, 95th percent of my data explicitly. For some reason on boxplot 3 and 5 on the figure I get fliers instead of whiskers on the lower parts.

Do you have any idea what could be the reason for this behaviour?

Gökhan

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