Quartiles bottom, about, following

jawz

How would one go about calculating the mean excluding the top 25% and bottom 25% (the 1st and 3rd quartiles)

Take the following range for instance...?


0.62%
0.34%
1.20%
0.68%
0.78%
1.00%
0.92%
1.01%
1.30%
0.85%
0.84%
0.74%