00:01
Okay, so we've got three measurements that we're looking at here.
00:04
17 .46 grams, 17 .42 grams, and 17 .44 grams.
00:15
So obviously these answers are not exactly the same, but there are a lot of similarities here.
00:21
So if you were to make these measurements to just three significant figures, you would get approximately 17 .4 grams for each.
00:31
So this last value here is our uncertain value.
00:36
Is it 0 .46? is it 0 .42? is it 0 .44 or something else? so this is going to be our random error.
00:48
And basically, every time you make this measurement, it's a little hard to tell exactly how many grams you've got.
00:54
If you're using a triple beam balance, for example, you might be trying to balance things, and it's pretty balanced, but not exactly quite exact.
01:02
And so that's where you get some variation due to random error here...