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In classical physics it was thought that every physical quantity has a "true value" that can be only estimated through measurements due to measurements errors. The way of getting nearer and nearer to this "true value" was thought on one side to increase the measurement accuracy, on the other side to increase the number of measurements so to use statistical methods to attenuate the effect of random errors.
The situation is completely changed with quantum mechanics. In quantum mechanics an "intrinsic" inaccuracy affects all the physical quantities, independently of measurement errors. Thus physical quantities would be random variables even if measured by an ideal instrument with no bias and no random error. Thus, in modern physics no physical quantity "true value" exists.
The only exception is the very rare and particular case of quantum self-state of a certain variable, where that variable only ha a precise value (but not the other variables of the problem !). However this is an extreme and unpractical case, and it seems to me not the case of going in deep in its explanation here.
What else can I help you with?
What is the term for an instrument whose output is consistently higher or lower than the expected value?
The term for an instrument whose output is consistently higher or lower than the expected value is "bias." Bias occurs when the measurement consistently deviates from the true value in a specific direction.
What does accurate in science mean?
In science, accuracy refers to how close a measurement or a value is to the true or correct value. It is a measure of how well a result reflects the actual state of the phenomenon being studied. Accuracy is crucial in scientific research as it ensures the reliability and validity of experimental findings.
On average what value is expected for the t statistic when the null hypothesis is true?
When the null hypothesis is true, the expected value for the t statistic is 0. This is because the t statistic is calculated as the difference between the sample mean and the hypothesized population mean, divided by the standard error, and when the null hypothesis is true, these values should be equal, resulting in a t statistic of 0.
What is the percentage error in p?
Percentage error in p is calculated by taking the absolute difference between the measured value and the true value, dividing by the true value, and then multiplying by 100 to get the percentage. The formula is |(measured value - true value) / true value| * 100.
What is a term used in science and defined as a statement about what happens in nature that seems to be true all the time?
A scientific law is a term used in science to describe a statement about a natural phenomenon that has been observed to occur consistently under certain conditions. Scientific laws describe what happens in nature without explaining why it happens.
What does real difference mean in science?
There are two ways to work out the real difference mean in science. Firstly, the real difference means when the ranges for two different values do not overlap. If they do overlap, then there may not be a difference in the true value. Secondly, if there is a real difference, the range of one value should not overlap the mean of another value.
Which term describes how close a measurement is to the true value?
Accuracy describes how close a measurement is to the true value.
What does accuracy mean in science terms?
In a scientific measurement, accuracy refers to the closeness of your measurement to the 'true value'. The true value is the result to which a large number of independent experiments, carefully conducted, tends.
Why is the mean an estimated value and not the true value?
The mean is an estimated value because it is calculated based on a sample of data rather than the entire population. Sampling variability can cause the mean of a sample to differ from the true population mean. Additionally, the mean is sensitive to outliers and skewed data, which can further affect its accuracy as an estimate of the true population value.
What is a measurement close to the true or accepted value?
The term is accuracy
What does how a close measurement is to the true or accepted value?
The term is accuracy
What is a close measurement is to the true accepted value?
The term is accuracy
Is the stock's true long term value more closely related to its intrinsic value or current price?
value
What does scientific mean?
Scientific means that it has something to do with science and it is based on science. Scientific facts are also proven to be true by science.
How close a measurement is to the true or accepted value is known as?
The term is accuracy
Which term below describes how close a measurement is to the true value?
significant figures
What term is used to described how close a measurement is to the true value?
Accuracy or tolerance.
