Question

How do you define the significant figure of a measurement?

Answer 1

1. The significant figures of a given number are those significant or important digits, which convey the meaning according to its accuracy.
2. For example, $6.658$ has four significant digits.
3. These substantial figures provide precision to the numbers.
4. The greater the number of significant figures obtained when making a measurement, the more accurate the measurement, conversely, a measurement made to only a few significant figures is not a very accurate one.
5. For example, a recorded figure of $5.32$ means the quantity can be relied on as accurate to three significant figures and a figure of $5.321$is said to be accurate to four significant numbers.