how to read lot of files , execute the same mean function over a particular dimension , and save the values into each files back

I have 8 excel files. I want to load each file and perform average function for each file separately and save them to 8 different variables .

[Stephen23]

"I have 8 excel files. I want to load each file..."

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

"...and save them to 8 different variables ."

Using one variable with indexing would be simpler.