When you estimate you guess the size of something, but when it is precise you have to actually measure it, e.g with a ruler.
The difference between a measurement and an estimation is that a measurement is an exact data while an estimation is a guess as to what something may measure. For example, you can use a ruler to get the exact measurements of a piece of paper. However, if you don't have a ruler, you can make an educated guess as to what the paper's length and width measurements may be.
It means to guess at something. An imprecise amount or measurement.
That depends how precise the estimation needs to be. It could be 600000, but it could be 589714.
What determines how precise a measurement is
It is precise if it is repeatable.
The measurement 25.81 is precise to the nearest hundredth.
A millilitre is more precise.A millilitre is more precise.A millilitre is more precise.A millilitre is more precise.
No. Accurate relates to how close the actual measurement the instrument measures. Precise relates to how much detail the instrument gives when measuring. They are independent to each other: An measurement can be precise and accurate (eg the value of π is 3.141592654) An measurement can be precise and inaccurate (eg the value of π is 1.733677432) An measurement can be less precise and accurate (eg the value of π is 3.14) An measurement can be less precise and inaccurate (eg the value of π is 1.73).
The article at the link below should help you get a handle on the subtle differences between accuracy and precision.
measuring tape
An approximation error is the discrepancy between an exact value and the approximation to it. This occurs when the measurement of something is not precise.
An automatically measurement has a higher precision than a manually measurement.