Hm, "closely related" sounds like a relationship between data that is far from random.
The simplest way would be to stick to the truth:
"The MSS method uses random data in the range of *** .. yyy." (no relation, just a range/condition)
"The MSS method uses random data obeying the relation ...." (with relation and condition)
If the data are a fixed set of elements in random order:
"The MSS method uses the data ... in random order."
If this is not satisfying, you probably need to supply more context.
Kajjo