Significant digits in measurement refer to the digits in a number that carry meaning or contribute to the precision of the measurement. They indicate the level of accuracy or certainty in a measurement, with each significant digit representing a reliable and known value.
Both accuracy and precision are important to scientific measurement. I'll try to explain the difference with a couple of illustrations. I should start by saying, sometimes the words are used interchangeably but they shouldn't be. I consider precision to mean resolution. That is how fine/small a reading you can get.Assume an electronic thermometer (digital display) can display answers to the nearest one hundredth of a degree. But, the thermometer isn't able to measure with that accurately. Maybe it's only accurate to the nearest whole degree. In this case the precision is greater than is supported by the accuracy of the device.Now take the opposite case where the thermometer is able to measure temperature accurately to one hundredth of a degree but the instrument can only display whole degrees. In this case the precision does not support the accuracy.Ideally the accuracy and precision of an instrument are the same but often that's not the case.
Precision is a measure of how much tolerance your observation has. If you measure time in an experiment as 1.7 +/- .3 seconds, then you are saying that the obervation is anywhere from 1.4 seconds to 2.0 seconds. On the other hand, if you say 1.70 +/- .05 seconds, you state a range of 1.65 seconds to 1.75 seconds. The second observation is more precise than the first. Accuracy is a measure of how correct a measurement is as compared with a standard. If the instrument that measured 1.7 seconds was actually 1.6 seconds, then it would have an accuracy error of .1 seconds. Precision is related to random error. Accuracy is related to systematic error.
Example sentence - Our homework assignment is to give an example of thermal expansion and explain why it happens.
You can explain spectrum to children by telling them that it is like a scale or a range. For example, colors can be arranged on a spectrum from red to violet. You can also use examples like musical notes on a spectrum from low to high pitch.
the measurement is precise to within34.5.so,a measurement of 33.5 in could be 45or 49in
Significant digits in measurement refer to the digits in a number that carry meaning or contribute to the precision of the measurement. They indicate the level of accuracy or certainty in a measurement, with each significant digit representing a reliable and known value.
State and explain problems in measurement and evaluation
"http://wiki.answers.com/Q/Explain_with_example_how_charts_are_used_in_analysis_Also_explain_the_different_types_of_charts_available_in_Excel"
Both accuracy and precision are important to scientific measurement. I'll try to explain the difference with a couple of illustrations. I should start by saying, sometimes the words are used interchangeably but they shouldn't be. I consider precision to mean resolution. That is how fine/small a reading you can get.Assume an electronic thermometer (digital display) can display answers to the nearest one hundredth of a degree. But, the thermometer isn't able to measure with that accurately. Maybe it's only accurate to the nearest whole degree. In this case the precision is greater than is supported by the accuracy of the device.Now take the opposite case where the thermometer is able to measure temperature accurately to one hundredth of a degree but the instrument can only display whole degrees. In this case the precision does not support the accuracy.Ideally the accuracy and precision of an instrument are the same but often that's not the case.
You need to specify which country used the measurement.
A measurement that has a larger number of significant figures has a greater reproducibility, or precision because it has a smaller source of error in the estimated digit. A value with a greater number of significant figures is not necessarily more accurate than a measured value with less significant figures, only more precise. For example, a measured value of 1.5422 m was obtained using a more precise measuring tool, while a value of 1.2 m was obtained using a less precise measuring tool. If the actual value of the measured object was 1.19 m, the measurement obtained from the less precise measuring tool would be more accurate.
i really do not know i just wanted to post that
Precision is a measure of how much tolerance your observation has. If you measure time in an experiment as 1.7 +/- .3 seconds, then you are saying that the obervation is anywhere from 1.4 seconds to 2.0 seconds. On the other hand, if you say 1.70 +/- .05 seconds, you state a range of 1.65 seconds to 1.75 seconds. The second observation is more precise than the first. Accuracy is a measure of how correct a measurement is as compared with a standard. If the instrument that measured 1.7 seconds was actually 1.6 seconds, then it would have an accuracy error of .1 seconds. Precision is related to random error. Accuracy is related to systematic error.
false.!!!I would have to disagree with this answer!! The member did not explain themselves!! I would have to say the answer is "TRUE"!!! Any feedback on this topic? Anyone care to respond, have discussion?I am also sure that the answer is true; see the link bellow.
What are conditional connectives? Explain use of conditional connectives with an example
define BCNF. Explain with appropriate example