To form an opinion about something based on the information or evidence that is available.
Arrive at (a fact or a conclusion) by reasoning; draw as a logical conclusion.
Can we deduce from your silence that you do not approve. (Oxford)
We can deduce a lot from what people choose to buy. (Oxford)
deduce from your silence
deduce a lot from
Conclude
Reason
Predict
Induct
Deduct