Looping wiht ERb dynamic fixture?

I would like to create a dynamic fixture with ERb which generates
about 5000 records. The data is all numeric and will be graphed and
therefore each record has no meaning on its own (and the record "name"
is not needed). My question is:

How can I create a dynamic fixture with ERb by using a loop and not
include the record "name"?

Thanks Chirag