The estimate usually greater than or less than the exact sum of two numbers because it is just a close guess without knowing the exact number.
How to calculate the range of estimated measurement from percent error?
If the measurement of the object is measured to be M, and the percent error in the measurement is estimated to be E%, and O is the original measurement of the object being measured then:
[tex]\rm M \in O \pm E\% \: \rm of \: \rm O[/tex]
where O is the original measurement of the object being measured.
This decides the range of values in which the original measurement can fall in. It is
[tex]\rm M \in O \pm E\% \: \rm of \: \rm O[/tex]
The estimate usually greater than or less than the exact sum of two numbers because it is just a close guess without knowing the exact number.
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