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How closely a measured value matches the actual value is precision?
Wiki User
∙ 8y ago
You think probable to the accuracy (in the English terminology); and this value is determined exparimentally in each case.
Wiki User
∙ 8y ago
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Explain why significant figures represent the precision of a measurement and not its accuracy?
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.
What is a Systematic?
Systematic error is the difference between the actual value of what is being measured and the value you found. The results of systematic error are precise but not accurate.
What is the measured the density of Copper to be 68.7 gcm3 The accepted density of Copper is 63.5 gcm3 What was your percent error?
percent error = [(experimental value - actual value)/(actual value)] x 100 so in this case: % error = [(68.7-63.50)/(63.5]x100
How do you know if a coin is gold plated or actual gold?
Check the weight. Weights for coins can be found online. If the weight matches or is very slightly higher, then the coin is gold plated. If it's significantly heavier, then it's gold.
What is the term for the amount of product calculated to be obtained from a given amount of reactant?
The measured of the amount of product obtained from a chemical reaction is called the yield. The yield can be further converted into a percent yield, which is the ratio of the actual yield of the experiment to the theoretical yield multiplied by 100.
If some measurements agree closely but differ widely from the actual value?
Then they have precision but not accuracy.
Precision is a measure of how close an answer is to the actual or expected?
False
3 people measure a distance The data is 2.3 mi 2.6 mi 3.1 mi The actual distance is 1.6mi Characterize the collected data in terms of accuracy and precision?
the difference between the true value and the measured values reflects the accuacy achieved. if you want you could work out an average deviation from the true value to reflect this. the precision is determined by how much the measured distances deviate only from each other. so the precision has nothing to do with the true or correct value. so just looking at this problem, it appears that the distances measured were more precise than they were accurate.
What if actual value - measured value is negative?
Then the measured value is larger than the actual value.
What is the difference between the accuracy of measurements and the precision of measurements?
Precision is how close your measurements are. Accuracy is how close your measurements are to the actual measurement.
Precision is a measure of how close an answer is to the actual or expected true or false?
false
The closeness of a measurement to its actual value is a measurement is called?
It's signature figures
True or false Precision is a measure of how close an answer is to the actual or expected value?
false
What is precision resistor?
A precision resistor is a resistor that has an actual value that is very close (or precise) to its nominal (or stated value). Therefore, precision resistors have a very degree of accuracy of being very close to their nominal values.
What is the actual of reaction?
The measured amount of product-
How closely a measurement reflects the actual value is what?
llol
What is the equation for accuracy?
%error = (Actual value- Measured value) / actual value *100
