Which is more affective, ratings vs. recommendation

7 Jul 2009 - 5:41pm
291 reads
Chauncey Wilson
2007

When you are presenting data, please include a measure of variability
and a distribution of scores. The 3.5/5 rating could mean a bunch of
2s and a bunch of 5s and you might have a bimodal distribution which
might have some design implications. I see so many reports where
there is no indication of variability or the actual shape of the curve
formed by the individual ratings.

A mean without a measure of variability is pretty weak in my view
since you don't know what the shape of the distribution is.

Chauncey

On Tue, Jul 7, 2009 at 9:36 AM, Chad Mortensen<chadmor at gmail.com> wrote:
> Does anyone have past experience  with whether displaying a users
> rating (average rating 3.5/5) vs. a users recommendation (65%
> recommend this) performed better than the other on a commerce site.
> Specifically a travel site but any commerce experience would probably
> still be relevant.
>
> Thanks
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