an educated guess

educated guess

A thoughtful, well-reasoned guess; a guess with some basis in one's knowledge. Class, we've studied cells all semester. Take an educated guess as to what the answer might be.
See also: educated, guess
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

an ˌeducated ˈguess

a guess made on the basis of facts, good information, etc., and so probably fairly accurate: I can’t tell you exactly how much the building work will cost, but I can make an educated guess.
See also: educated, guess
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
References in periodicals archive ?
You probably could have just taken an educated guess instead, Cherry.
The yearbook quote reads: "Now you can call me Madison Hypothesis, because I'm an educated Guess."
It was just "an educated guess." After receiving flak, presidential spokesman Salvador Panelo clarified his earlier statement that the government's list of narco politicians was based on technical surveillance, including the possibility of wiretapping.
Since number of invitees are not known, an educated guess can easily place it at over 600.
Asked when the sea code may be completed, he said, '...if we have to make an educated guess, it could be anytime towards the end of the year or next year until we actually have a COC that I think will satisfy everyone.'
On the word "theory", it's sometimes believed this means an educated guess. However, in science the word is used differently.
The incidence of retained surgical sponges was estimated in one study to be one in every 5,027 surgeries, but that estimate was an educated guess, and in fact the true number is unknown--and likely unknowable.
Perhaps delaying the cut-off point until 4 or 5pm on the Sunday would allow trainers and jockeys a chance to sample the ground and make an educated guess, as well as allowing Fairyhouse and the sponsors a chance to finalise the field so Monday's newspapers and the day's racegoers come racing with what they know is the final Irish Grand National field of 30.
Otherwise it is undated but, looking at the traffic and dress of people in the photograph, an educated guess would date the image from the later 1930s.
But what creases me up are those contestants (often teachers or science students) who, having proved that they've learned nothing since primary school, say "this is an educated guess" before answering that Judas Iscariot was in a boy band and Al Pacino an American gangster.
This is said to be an important new capability because previous methods measure only the exterior temperature, leaving processors to make an educated guess about how much heat is driven through the preform wall.
Based on past experience and current conditions, the engineer can then make an educated guess as to what machine conditions will be at any given time.
The fall of David Moyes has been one of the season's most enduring narratives but can we make a few quid from an educated guess at where he might resurface?
Looking at the approach, but without digging out the TERPS manual and topo charts, an educated guess is terrain.
The other ones just required a bit of patience and logic but with that answer it was really more of an educated guess than what I thought the answer was.