Mean Example
Example 3.1 Given annual costs (in $000):
x1 = 15.6 at Indiana University
x2 = 17.0 at Michigan State University
x3 = 24.2 at Northwestern University
x4 = 15.2 at Ohio State University
x5 = 16.4 at Penn State University
x6 = 15.2 at Purdue University
x7 = 15.4 at University of Illinois
x8 = 13.0 at University of Iowa
x9 = 23.1 at University of Michigan
x10 = 14.3 at University of Minnesota
x11 = 14.9 at University of Wisconsin