Jika diketahui nilai yang diharapkan, kurangi nilai yang diharapkan tersebut dengan nilai yang diperoleh untuk mendapatkan nilai kesalahan absolut. Selain itu, saat mengukur sesuatu, anggaplah kesalahan absolut adalah satuan terkecil dari alat pengukuran yang digunakan. Selalu tambahkan satuan yang sesuai. Berlatihlah dengan beberapa contoh. Pahami apa penyebab kesalahan dan cara menghilangkannya.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
An expected value is usually found on tests and school labs. Basically, this is the most precise, common measurement to come up with, usually for common equations or reactions. You can compare your own results to get Absolute Error, which measures how far off you were from the expected results. To do so, simply subtract the measured value from the expected one. Even if the result is negative, make it positive. This is your absolute error!  Example: You want to know how accurately you estimate di