No, it is not true. They reflect the precision of the number in the context of its use. If required to calculate the population density of Greater London in 2011, I would use the population in millions - not because that is the limit of the accuracy of the census results but because greater accuracy does not add significant value to the precision of the population density.
the precision of the answer must have the same number of significant digits as the measurement with the least significant digits- the site explains the rules and how to identify significant digits
The significant digits are: 3701; so there are four such digits in the measurement. These are the digits that convey the degree of precision included. Leading zeroes and trailing zeroes do not add such meaning.
Not necessarily. I measure my height to 3 sig figs (for example 178 cm), but I may choose to report is as 180 cm (to 2 sf).
The number of digits in a measurement that you know with a certain degree of reliability is referred to as significant figures. Significant figures include all the known digits in a measurement plus one estimated digit, indicating the precision of the measurement. For example, if a measurement is recorded as 12.3, it has three significant figures, reflecting a reliable accuracy up to the tenths place. The more significant figures, the greater the confidence in the accuracy of the measurement.
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.
the precision of the answer must have the same number of significant digits as the measurement with the least significant digits- the site explains the rules and how to identify significant digits
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 certainty in a measurement and help determine the accuracy of the result. The more significant digits in a measurement, the more precise the measurement is considered to be.
the precision of the answer must have the same number of significant digits as the measurement with the least significant digits- the site explains the rules and how to identify significant digits
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.
The significant digits are: 3701; so there are four such digits in the measurement. These are the digits that convey the degree of precision included. Leading zeroes and trailing zeroes do not add such meaning.
Not necessarily. I measure my height to 3 sig figs (for example 178 cm), but I may choose to report is as 180 cm (to 2 sf).
The term for eliminating digits that are not significant is called rounding or truncating. This process involves reducing the number of digits in a calculation to match the precision of the measurement.
Significant digits do help to reflect the true precision of a measurement. This is because often the last reported digit in a measurement has an unacceptably large error associated with it. Thus, only reporting significant digits is the most conservative practice. Sometimes, however, it helps to be more accurate on a single measurement. In this case, if the measurement device is reliable to the last reported digit it may be reported for the sake of accuracy.
The least count of a measuring instrument is the smallest value that can be measured with the instrument. It determines the precision of the measurement. Significant figures, on the other hand, are the digits in a number that carry meaning about the precision of the measurement. The number of significant figures in a measurement is related to the least count of the instrument used to make that measurement.
If the measurement was of such precision that the zero to the right of the 3 could be measured with accuracy, then it has two significant digits {30}.
157.725 ml is the answer if 0.6667 is an exact measurement. If it's an actual measurement, you only have 4 significant digits of precision, and the answer is 157.7 milliliters.
their both based on units of measure