How to read the graph -
If your web site is above the average (50) for any characteristic
according to our reference databases the bar for that characteristic
will be green. If it is below, the bar will be red. If the bar is
below 30 or above 70 this means that your site is exceptional on that
characteristic.
Notes Presentation of the graph: - This graph shows the average (Median) values for your site
on the WAMMI scales Attractiveness, Controllability, Efficiency,
Helpfulness, and Learnability. The last item is the Global Usability
measure which is a weighted composite of items from each of the other
scales. If your site has scored above average on a scale, this is
indicated by a green bar extending upwards from the '50' line. If your
site has scored below average on a scale, this is indicated by a red
bar extending downwards from the '50' line.
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WAMMI Scales:
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- Attractiveness
- An Attractive site is visually pleasant, and also
offers much of direct interest to the intended users, whether it be
functionality or information.
Controllability- If a site scores well on Controllability the users most
probably feel they can navigate around it with ease. Poor usually means
a poorly organised site.
Efficiency- When users give a high Efficiency rating they feel they
can quickly locate what is of interest to them and they feel that the
web site responds (possibly, the pages load) at a reasonable speed.
Helpfulness- A site which is high on Helpfulness corresponds with
the users' expectations about its content and structure. A site low on
Helpfulness can be misleading about its content.
Learnability- When Learnability is high, users feel they are able to
start using the site with the minimum of introductions. Everything is
easy to understand from the start. When Learnability is low, users feel
that the site may be using concepts or terminology which are
unfamiliar. More explanations are needed.
Global Usability- Global Usability centres round the concepts that a site
must make it easy for users to access what they need or want from the
site, that there is a good, understandable level of organisation, and
that the site 'speaks the users language'.
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