From: Christophe.Wolfhugel@grasp.insa-lyon.fr (Christophe Wolfhugel)
Newsgroups: news.lists
Subject: Usenet site size statistics -- August 92
Followup-To: poster
Date: 4 Sep 1992 07:45:22 +0200
Organization: INSA Informatique (Grasp), Lyon, France
NNTP-Posting-Host: grasp1.univ-lyon1.fr
Summary: statistical study of usenet sites
Keywords: site, statistics, size, arbitron

Following statistics have been done using Brian Reid's list of
sites participating to the monthly arbitron statistics survey.

Number of sites: 1090  (last months: 815 - 835 - 973)

             <------- August 92 ------->      <-------- July 92 -------->
  Range       #      %       T#     T%         #      %       T#     T%
-------------------------------------------------------------------------
0000-0000:    34    3.12      34    3.12       29    3.56      29    3.56
0001-0001:    18    1.65      52    4.77       15    1.84      44    5.40
0002-0003:    50    4.59     102    9.36       33    4.05      77    9.45
0004-0007:    93    8.53     195   17.89       78    9.57     155   19.02
0008-0015:   118   10.83     313   28.72       87   10.67     242   29.69
0016-0031:   140   12.84     453   41.56       99   12.15     341   41.84
0032-0063:   170   15.60     623   57.16      128   15.71     469   57.55
0064-0127:   154   14.13     777   71.28      114   13.99     583   71.53
0128-0255:   132   12.11     909   83.39       94   11.53     677   83.07
0256-0511:    73    6.70     982   90.09       58    7.12     735   90.18
0512-1023:    52    4.77    1034   94.86       37    4.54     772   94.72
1024-2047:    31    2.84    1065   97.71       25    3.07     797   97.79
2048-4095:    16    1.47    1081   99.17       12    1.47     809   99.26
4096- ++ :     9    0.83    1090  100.00        6    0.74     815  100.00

#  =   number of sites
%  =   percentage / total
T# =   cumulative number of sites
T% =   cumulative percentage

Mean site size:  246 (last months: 241 239 250)
Standard deviation: 734 (last months 706 676)

Logarithmic mean: 3.8
Log. Std. Dev:    1.9
Geometric mean:  44.9  (approximates the hump of the curve)
Sigma (left):     6.8
Sigma (right):  296.6

Median:            48  (there as many sites with less users than with more)

Most encountered number of users:

#Users    Sites
    0      34
    2      33
    4      27
    7      25
    5      23
   10      20
    6      18
    1      18
    3      17
    8      17
   17      17
   12      15
   15      15
   13      14
   11      13
   20      12
    9      12
   14      12
   18      11
   48      11
   50      10
   40      10
   22      10
   32      10
   25      10
   16      10

Remember that sites reporting 0 users have probably a broken script for
counting users, or really no non administrative users. You can also note
that this is also the most encountered value :).

I'm planning to add Postscript curves to my articles, hmm... can one
give me references on software to use to generate such stuff?

-- 
Christophe Wolfhugel    |    Email: Christophe.Wolfhugel@grasp.insa-lyon.fr
   "No keyboard, press F1 to continue"
Xref: sparky news.lists:377 news.groups:17558 news.announce.newusers:132 news.announce.newgroups:1074 news.answers:2773