How to measure other characteristic which are not following in base or derived units for e.g. testing good behavior, smell, magnetism, light, colour etc.
Measurement is nothing but comparison. For measuring something,we select unit and consider it as standard. Therefore we judge the characteristics by measuring how many times the characteristics is more than the selected standard unit. For e.g. by considering sweetness of sugar as a unit, we can decide how many times is the sweetness of sweet.
Factors affecting measurement:
No measurement is absolute in nature. It is very difficult to claim that any measurement is 100% accurate. But we can always reduce the errors in measurement.
Accuracy depends on lots of factors:
i) Reading taken by the individuals.
Meter tape =
Wrist watch =