Estimation
Estimate
noun, verbal noun
You’re doing a bit of inferring while you determine something, which means you’re not 100% sure, making this an estimation.
推定 refers to an estimation that’s generally based on some evidence or reasoning. You’ll often find this used in statistical or scientific contexts, where it refers to an educated guess or estimation based on available data.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
社長の推定年収は五千万円です。
The company director’s estimated annual salary is around 50 million yen.
死亡推定時刻は11日夜から12日朝の間だそうです。
The estimated time of death is said to be between the night of the 11th and the morning of the 12th.
そのサバンの男は群衆の規模を534人と推定したのだが、実際の数とピッタリ当っていた。
The guy, who is a savant, estimated the scope of the crowd to be 534 people and he was exactly right.