AQUARIUM

what are the application to real life of getting the precision and accuracy ?

- Precision:
Let’s take an example : you want to measure the weight.
If you use a bathroom scale, you will be able to differentiate weight of people, as the range of people weight goes from 30 to 150 Kg, you need a precision of 0.1 Kg : The precision is sufficient to differenciate the full range of people.
Now, If you want to make a cake and weight the amount of flour, the precision will not be good enough : you need to differenciate to the scale of the gramme, therefore the kitchen scale is more precise.
– Accuracy:
Let’s say that you still want to do your cake and that you have selected a kitchen scale with a good precision.
You measure your quantity of floor but forgot to remove the spoon. You will read 100 g when in fact there is only 80g of floor.
Your measure is not accurate because of this offset.
Offset is not the only reason that will affect the accuracy of your measurement system, Aging, loss of material, electronical discharge, etc…
Other example : Check the clock of your computer, the precision is good : 1 seconde, what about the accuracy: check your watch, see the difference. Which one is more accurate ?

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