Means in multiple tables

I have twenty five unique 20x30 variables. They are named u1, u2, u3, ... u25. I would like to calculate the mean of the i'th entry in each and place it in the i'th entry of a variable u_mean, also 20x30. For example, I want to take the mean of the 33rd (arbitrary number) entry of each variable (mean of 25 numbers, one from each variable) and make that mean the 33rd entry in u_mean.

I am assuming that it is possible/applicable to use linear indexing to reference the 600 values opposed to row,column.

I have tried nesting a for loop within another for loop to vary both the variable name and entry number, but was unable to come up with a solution.

Thank you in advance.

[Rena Berman]

(Answers Dev) Restored question.

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F