Help please 1) When writing the error analysis for her lab report, a student cla
ID: 1324611 • Letter: H
Question
Help please
1) When writing the error analysis for her lab report, a student claims that there were no errors because she used a computer to take all of her measurements. Do you agree? Explain.
2) If you have a very small associated error on a measurement, is that measurement accurate or precise? If you measure something to 4 decimal places, is this measurement accurate or precise?
3) What kinds of errors effect the accuracy of a measurement? What kinds of errors effect the precision of a measurement?
Explanation / Answer
1) When writing the error analysis for her lab report, a student claims that there were no errors because she used a computer to take all of her measurements. Do you agree? Explain.
Computer uses human written programs to do what they do, be it measurements or calculations. So there will be some assumptions made, approximations used. In other words, computer measurements cannot be absolute or without error.
2) If you have a very small associated error on a measurement, is that measurement accurate or precise? If you measure something to 4 decimal places, is this measurement accurate or precise?
If the error associated with the measurement is very small, the measured value is almost equal to the given value and hence, then the measurement is accurate.
When the measured value is same as the given value upto 4 decimal places, we can call the measurement precise.
3) What kinds of errors effect the accuracy of a measurement? What kinds of errors effect the precision of a measurement?
Both systematic and random errors affect the accuracy measurement.
Random errors affect the precision measurement.
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