'draw a conclusion from' is a perfectly correct and usable phrase in written English.
It is usually used when you want to suggest that someone should draw an inference or reach a conclusion based on the evidence or information given. For example: "After looking at the data, try to draw a conclusion from it to form your opinion."
But we can't draw a conclusion from a possibility".
Present a user with a palette of 6 options, each varying in one property, and you'll easily be able to draw a conclusion from your testing.
The researchers did not draw a conclusion from their study as to why working class whites are disproportionately helped by government poverty reduction programs.
Mark gave a nice hint for a class of similar problems: find two ways to count something and draw a conclusion from there, always a good strategy.
Meanwhile, here's an answer to Gerry Carr's fastidiousness from Francis Mead: "If you look in most dictionaries these days, infer can mean both "draw a conclusion from" and "imply".
"I think it would be dangerous to draw a conclusion from that vote that voters are looking for me to say no to everything," said Mr. Perriello, who has not yet decided how to vote on health care.
It drew a conclusion from talking with a few people about racism.
Beginning an answer with "so" implies that the answerer is drawing a conclusion from a body of knowledge to which she is privy and the listener is not.
Some elements of The Sun's coverage suggested it had drawn a conclusion from the poll which the results arguably do not sustain.
Too often McWhorter does what many blacks accuse whites of doing -- he draws a conclusion from any negative encounter he has experienced with another black person and assumes it is the norm; whatever violates it is the exception.
Without mentioning it, Camus draws a conclusion from these facts, namely that the soul is not immortal.
