When you are given a list of raw data you should round the mean and standard deviation to 1 more decimal place than what the data has. ... If your data has 1 decimal place you round to 2 decimal places. If your data has 2 decimal places you round to 3 decimal places.

Can standard deviation have decimal?

How many decimal places should standard deviation be? For numbers be- tween 0.10 and 10, report to two decimal places (e.g., M = 4.34, SD = 0.93). For numbers less than 0.10, report to three decimal places, or however many digits you need to have a non-zero number (e.g., M = 0.014, SEM = 0.0004).

What is the rounding rule in statistics?

Rule: When the calculated sample size is not a whole number, it should be rounded up to the next higher whole number. Rule: Rounding up a sample size calculation for conservativeness ensures that your sample size will always be representative of the population. ... In this case, 2007 data points samples should be taken.