Surveys Extended WordPress plugin by pitschi lets you add surveys to your blog. It is based on the Surveys plugin by Binny V A.
You can let the vistors take surveys and see the result from the admin side.
This extended version of the original plugin is advanced in the following ways:
it offers the possibility to change the order of the questions of a survey
it provides a back and foreward button to the customer
There are two ways to see the data…
This will show the results each question by aggregating all the data so far. This will look like a poll result. This mode is useful to make decisions – you can immediately see the most favored answers in each question.
You can also view all the answers provided by one visitor.
Plugin homepage: http://www.bin-co.com/blog/2008/11/surveys-wordpress-plugin/
Download and info: http://wordpress.org/extend/plugins/surveys-extended/