biology aqa aslevel

how do you calculate uncertainty?

Reply 1

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

ricecakes1

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!