Question

whats the difference between systematic error and random error. please explains. thanks

Answer 1

In a nutshell, a systematic error is a problem that you can't overcome because it's a problem with the experiment itself. For instance, if you're measuring a colour change in a chemistry reaction and you have to rely on your eyes, there's a systematic error there because your eyes are not as reliable as a machine. The error is part of the system...part of the equipment. Or say you have a pair of scales you're using to weigh something, and the scales aren't that reliable? Say they always under-measure by a few grams. That's a systematic error because it's part of your experiment and not something you can change. You just have to live with it.

A random error is something that you can't predict in advance. For instance with the example I just gave, if you know your scales are a bit faulty, you can predict that and account for it. You an adjust your results. A random error is something that "goes wrong" in the experiment itslef for instance, someone might breathe on the reaction and blow some of the powder away by a tiny bit. Or, the temperature in the room might suddenly drop because a cloud goes over the sun and lowers the room temp by half a degree or something? Maybe if you're measuring heart rate, the person suddenly has a mild panic attack...it's an error that won't occur every time.

Answer 2

so systematic is due to the device while random error is uncontrollable

Answer 3

Exactly.

Answer 4

can you please use a ruler as as an example to describe each error

Answer 5

random errors are like the ones I make lol.

Answer 6

system error: machine run infinite loop
random error: human mistake in calculation