ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: Momo.05 on February 18, 2010, 08:22:17 pm
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Can someone please give me some examples of errors for these two types of errors?
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Random errors in experimental measurements are caused by unknown and unpredictable changes in the experiment. These changes may occur in the measuring instruments or in the environmental conditions ( so things u cant stop from happening more or less.)
Systematic errors in experimental observations usually come from the measuring instruments. They may occur because:
* there is something wrong with the instrument or its data handling system, or
* because the instrument is wrongly used by the experimenter.
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Systematic error - Scale not calibrated, meniscus read the wrong way. In other words, it is a mistake in an experiment where it will mean that all your data will be inaccurate.
Random error - Usually different every time. Like when you are measuring time with a stopwatch, you could press the stop button one second too late or one second too early. This does not happen all the time, so it is random. That's why you would repeat the procedure a couple of times to minimise this