 Okay, let's try this problem on a random or systematic error. So remember error, of course, is the difference between the value measured or the value gotten and the true value. So if we're thinking about it like a dartboard here, that's what this is supposed to be. So if you think about the x's being the player's throws, so number one and number two, both had five throws and you can see they're both pretty terrible, dart players, right? Both had a lot of error associated with their dart throwing, but one of them actually had random error and the other one had a systematic error. So recall what we talked about with systematic error is where all of the, there's something wrong with the equipment that you're measuring it with, right? So all of your measurements are going to be off either above or below the true value. So in the case of darts, they'll be off kind of collected in one area. So probably with that, you can figure out which one is which. So which one of these has a random error and which one has a systematic error? Well, these ones are pretty evenly distributed throughout the dartboard on player one. So this guy's kind of got a random error and throwing. This guy, or gal over here, has the systematic error. You know, something consistently wrong in the same way with value. So maybe this player is like standing on a hill or something that's forcing them systematic error. So hopefully that gives you some idea about the difference between random and systematic error. So the thing you can talk about is precision and accuracy. So precision is, remember, the ability to hit the same point. Even though they have a systematic error, they're very precise, hitting the same point every time. This person is not precise. Their placement of the darts isn't close because the average of these is going to be somewhere in the middle here. And that's pretty far away dual value. So this is not somewhere very close to the bull's eye, so it's more accurate than this one.