Answer:
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By using significant figures, we can show how precise a number is. If we express a number beyond the place to which we have actually measured (and are therefore certain of), we compromise the integrity of what this number is representing.
Why is it important to use the correct number of significant figures when expressing measurements averages and uncertainties?
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The number of significant figures that should be used in stating a result is inseparably connected with the accuracy with which the result is known. ... But the apparatus can measure only up to a precision of one place after the decimal. Hence the correct way to express the answer is 2.4 ± 0.2.
Explanation:
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