BagSplit Question

[James Newhaven]

I've used BagSplit which generates a relation with the following
schema:

{datafu.pig.bags.bagsplit_J_1979: {(data: {(A::group:
chararray,A::tagcount: long)})}}

I'm pretty new to Pig, what I want to do now, is access each bag
generated from the split and run the AVG function on the tuples inside
the bag.

Is someone able to tell me the correct pig syntax do this?

Thanks,
James