Question

How to write the uncertainty of a number?
Ex:188.01
325
50
441
414.88

Answer 1

Suppose you are measuring the length of a cylinder by a metre scale. You obtain the measurement as16.2 cm. The minimum measurement that can be made with this scale is 0.1 cm. Hence while writing the length of the cylinder it has to be written as 16.0 cm. (or 16.0 + 0.1 cm). If instead the same measurement is done by a vernier calliper with least count 0.01 cm then on obtaining measurement value as 16 cm, it must be written as 16.00 cm ( or 16.00 +0.01 ) cm .

Hence for the above examples :-

188.01 can be written as (188.01+0.01})

325 can be written as (325+50)

_{50 can be written as 50+10}

_{441 can be written As 441}+1

441.88 can be written as 441.88+0.01)