Final answer:
For Standard Deviation calculations, round the final answer to one more decimal place than the original data. Intermediate results should be kept with at least two extra significant figures for accuracy.
Step-by-step explanation:
When calculating Standard Deviation, it is a general rule to round to one more decimal place than the original data. This means if your data is measured to the nearest tenth, you should round your final calculation of the standard deviation to the nearest hundredth.
While performing the calculation, it is advised to carry the intermediate results to at least two extra significant figures to maintain accuracy and only round off the final answer according to the significant figures rule. This approach helps in minimizing rounding errors and ensuring the reliability of the final statistic.