The results are in the graph below and represent published figures from each university’s website.  Please note that these numbers only represent what they call “Tuition and Fees” and don’t include any room and board, meal plans, book, or anything else.  The sources I used to come up with this graph are listed below as well.

While most of the universities did publish their tuition cost, Northwestern University stood out in that their price was not transparent.  I did a rough estimate for only their tuition for 3 quarters and did not include any other fees, so this number is on the very low end of their spectrum.

Also, note that not all universities had posted their tuition for 2010-2011 yet, so some of them still have the 2009-2010 cost.  The tuition year is show in ()’s.

The most expensive university in the Big Ten is Northwestern University which costs roughly $35,000 for 1 year of education plus all kinds of fees for residents and non-residents alike.

The least expensive university in the Big Ten is Iowa, which costs roughly $7,000 for residents.

The least expensive university in the Big Ten for out-of-town students is Minnesota which costs a little under $22,000 per year.

The sources I used for these figures:

http://admissions.illinois.edu/cost/tuition_freshman.html
http://www.indiana.edu/~iuadmit/cost/tuition.shtml
http://www.uiowa.edu/facts/tuition/index.htm
http://www.finaid.umich.edu/Financial_Aid_Basics/cost.asp
http://admissions.msu.edu/finances/tuition.asp
http://www.irr.umn.edu/tuition/
http://www.northwestern.edu/sfs/tuition/undergrad_tuition.html
http://undergrad.osu.edu/costs.html
http://www.psu.edu/studentaid/costs/est_costs.shtml?reload
http://www.purdue.edu/futureboilermaker/costs/tuitionfees.html
http://www.admissions.wisc.edu/costs.php