Evidence gathering notes
The simplest way to gather evidence without causing a major disruption is to
do the following:
- Determine the number of fax machines on campus
You can do that by getting an electronic copy of the phone directory,
extracting the "fax" column, and doing a unique sort on that
column. This can be done with a one line command in unix. The result is the
number of fax machines you have on campus.
- Select the participants
Randomly select 50 fax numbers from the phone book. Fax them the
notice and instructions to save all their unsolicited faxes for 3 weeks and
send them in via interdepartmental mail.
- Collect the results
At the end of the 3 week period, you should have 50 "packets". If
you have less than this, it's fine...it will just be a smaller statistical
sample which we then just extrapolate to the full number of fax machines. So
if we only get 40 packets back and there are 800 fax machines, we'd multiple
the number in hand by 20 to estimate the total number of unwanted faxes
during the period.
We can then use statistics to accurately extrapolate the total junk fax
volume. We can also perform statistical analysis on the samples to determine
confidence levels in the extrapolation.
Unsolicited fax class action- Home page