estimate

mielipide

arviolaskelma

arvioida

arvio A rough calculation or guess.
puhekieltä A document (or verbal notification) specifying how much a job will probably cost.
{{quote-book|year=1928|author=Lawrence R. Bourne
To calculate roughly, often from imperfect data.
{{quote-book|year=1965|author=Ian Hacking|title=Logic of Statistical Inference|passage=I estimate that I need 400 board feet of lumber to complete a job, and then order 350 because I do not want a surplus, or perhaps order 450 because I do not want to make any subsequent orders.
(quote-book)
To judge and form an opinion of the value of, from imperfect data.
John Locke

It is by the weight of silver, and not the name of the piece, that men estimate commodities and exchange them.

It is always very difficult to estimate the age in which you are living.