Calculating Standard Error for Sample Size

[vky]

hi, just wondering if there different ways to calculate the standard error for large and small sample size and if its so wats the formula we use? please give me a hand, hope this question makes sense.
cheers

 

[EnumaElish]

Are there multiple estimators of standard deviation with different small sample properties? Yes.

http://en.wikipedia.org/wiki/Standa...dard_deviation_from_sample_standard_deviation