Statistical confidence in averages is based on the population fitting within
a normal distribution which we cannot assume to be the case with i-mode use.
If we have a bimodal distribution where most users either use i-mode very
little if at all or spend more than \4,000 / month on the service, it would
be perilous for any business to form policy based on the average as very few
users would actually be spending this amount.
Does anyone know if DoCoMo makes available data on i-mode usage
distribution - this would be very interesting.
Kyle
X-9 DESIGN LAB
http://www.X-9.com
-----Original Message-----
No, it just means that when you're talking about a user population of over
27
million, the highs and lows average out, and the average of 2500 yen/month
is
a good baseline to use for determining policy that affects all users. Thus
the
term "average".
r e n
[ Need archives? How to unsubscribe? http://www.appelsiini.net/keitai-l/ ]
Received on Tue Aug 7 07:07:32 2001