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biology aqa aslevel

how do you calculate uncertainty?
Reply 1
Original post by ricecakes1
how do you calculate uncertainty?

uncertainty is the smallest graduation on whatever the value was measured on divided by 2 so for example:
if a gas syringe gives its readings to the nearest 1 cm3 the uncertainty is ± 0.5 cm3

and then you can calculate % uncertainty by
percentage error = (uncertainty ÷ measured value) x 100

hope that helps!
Reply 2
Original post by SarikaN
uncertainty is the smallest graduation on whatever the value was measured on divided by 2 so for example:
if a gas syringe gives its readings to the nearest 1 cm3 the uncertainty is ± 0.5 cm3
and then you can calculate % uncertainty by
percentage error = (uncertainty ÷ measured value) x 100
hope that helps!

thank you sm!

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