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Q: What are all the digits that are known in a measurement plus the last digit that is estimated?
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All the digits known with certainly plus one final digit which is somewhat uncertain or is estimated?

significant figures


What is a known or estimated in a measurement?

Significant figure


What is meant by significant figures in measurement?

In any measurement, the accurately known digits and the first doubtful digits are called significant figures.


How many significant figures in the number 20?

Significant digits refer to the number of digits that are known versus the number of digits that are estimated. So if the number 20 is an approximation, there is only one significant digit, which is the 2. However, if 20 is accurate to the ones place, then there are 2 significant digits. 20.00 has four significant digits, because it is known that the number is accurate down to the hundredths place.


The digits in a measurement that are known with certainty are called?

Significant figures


What is an estimated digit?

Suppose you have a variable whose exact value is not known. Repeated estimations give values which match up to a certain degree but beyond that they are different. You could take some sort of [weighted] average of the leading digits of these different parts and your estimate for the variable wold be the matched part with the estimated digit appended.For example, if you Google "mass of proton" the WIkipedia site give it as ‎1.672621898(21)×10−27 kg. The (21) - in parentheses - indicates that those two digits are estimated.


How a measured value is reported in terms of known and estimated digits?

Significant Figure.


How many significant figures?

2 significant figures.


What types of numbers are significant figures?

Accurately known digits along with first doubtful digit are called significant figures.


What must be known In order to calculate the third years depreciation on an asset using the sum of the years digits method?

Original cost, estimated salvage value, and estimated useful life.


What is 5 digit code system?

There are many codes that use 5 digits systems. One of the best known ones is the US postal service ZIP CODES. In health care, there is a 5 digit code system known as ICD9.


Explain why significant figures represent the precision of a measurement and not its accuracy?

Significant figures are a way to communicate the precision of a measurement, showing the level of certainty in a number. They indicate the known digits in a measurement plus one estimated digit. Accuracy, on the other hand, refers to how close a measurement is to the true value, which can be affected by systematic errors that can't be corrected by considering significant figures.