Slum street estimated to indicate a degree of affluence (5,4)
I believe the answer is:
means test
'a degree of affluence' is the definition.
I can't judge whether this definition defines the answer.
'slum street estimated to indicate' is the wordplay.
'slum street' becomes 'st' (abbreviation. I am not sure about the 'slum' bit.).
'estimated' becomes 'est' (abbreviation).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'indicate' becomes 'mean' (I've seen this in another clue).
'st'+'est'='stest'
'stest' after 'mean' is 'MEANS-TEST'.
Can you help me to learn more?
(Other definitions for means test that I've seen before include "financial investigation" , "Inquiry into the financial state of a person applying for aid" , "enquiry into funding" , "Check to see if one qualifies for assistance" , "resources check" .)