Chart Share from Rick Kubina. November 23, 1999 (updated
11/26/99, 12/28/99)
Chart Ancestry: Rick -->Steve Graf-->John Cooper-->
Og
Charts produced by Steve Graf's templates (using Statview). After I made
them I simply imported them to Word. Very easy and something I recommend
to others who want a quick, efficient way to produce show charts. (When
received by Ian, exported from Word into an HTML file. Then take the img#.gif
into Adobe PhotoShop and crop, etc. Then exported into a CompuServ.GIF
file, using Adaptive colors 16. Makes a smaller file that will work on
older browsers.)
This monthly chart shows the frequency of the total
number of posts generated each month on the SClistserv. The list began
in June of 1997. I save every message posted to the list and at the end
of the month I count
the number of posts (regardless of content) people submit to the list.
The monthly posts show an overall x1.3 celeration with a x2.2 up-bounce
and a x2.2 down-bounce (total bounce equals 4.8). If this trend continues
in the year 2002 we will have months where list members receive 500 messages.
The up-bounce would suggest some months will see as much 900 messages!
Looking at the data points for the past year, however, the celeration line
appears lower, about x1.1. November's result, 352 posts, is a new record,
happening in the same month as the Precision Teaching Conference. |
 |
 |
This monthly chart shows the total number of members
on the Clistserv. The list began in June of 1997. Each month I execute
a command "Review
SClistserv," which tells me the current subscribers to the list.
The number of members show an overall x1.1 celeration with a x1.0 total
bounce. The trends show a steady, gradual growth. Again, a recent analysis
of the number of people joining in the last year shows an even lower celeration,
x1.05. November again shows a record high of 139 members. |
Both of these charts offer some interesting predictions. Also, both
charts lead me to speculate. Perhaps the number of posts in the past year
has leveled off somewhat because the number of list members has remained
relatively stable? Maybe a relationship exists between the number of monthly
posts generated and the number of members. More specifically, when the
posts reach a very high frequency perhaps some members drop off the list
because of the volume? I offer these as just speculations and would
enjoy reading others' comment on the data presented in this chart share.
Rick Kubina, Ph.D.
Assistant Professor
Clarion University of Pennsylvania
Special Education and
Rehabilitative Sciences
840 Wood Street
Clarion, PA 16214
Office: (814) 226-2257
Fax: (814) 226-1951
Home: (814) 223-9308
email: RKubina@clarion.edu
We will add comments as they are posted to the List
Server, or to Rick, or to
this
web site.