00:01
So for the first part of this question, let's just define accuracy and precision.
00:07
So accuracy is how close your measured value, how close the measured value is to the true value.
00:24
And then precision is basically how close all of your measured values are to each other.
00:38
So how close the measured values are to each other.
00:49
So for instance, say you are measuring a pencil.
01:00
You measured it three times.
01:01
You got 6 .5 inches, 6 .4 inches, and then 6 .6 inches.
01:11
So if i, all of these numbers are very precise, right? because they're very close to each other.
01:18
So they're precise.
01:20
However, if i told you that the true value of the pencil was 8 .5 inches, they would be precise, but not accurate because they're very far from that true value.
01:32
However, if the true value was 6 .5 inches, you would say that was very accurate because these are all close to the true value and they're all precise.
01:46
So in answering that first question, how can you have good precision at? accuracy in spite of inherent measurement uncertainty...