Standard deiation question

radek2166 · #1 06-05-2005, 04:05 PM

n=8

x38,15,30,35,20,30,30,10

Can someone give me the SD for this please? I am checking my work here

Thanks.

boncher · #2 06-05-2005, 04:20 PM

Std.Dev.~9.260

elitegimp · #3 06-05-2005, 05:09 PM

[ QUOTE ]
n=8

x38,15,30,35,20,30,30,10

Can someone give me the SD for this please? I am checking my work here

Thanks.

[/ QUOTE ]

It depends on whether you are talking about a sample (the 8 numbers you gave were pulled at random from a much larger dataset) or a population (those numbers are the only numbers in your dataset), because there are two different formulas.

For a SAMPLE, the standard deviation 9.8995, for a POPULATION it is 9.2601

radek2166 · #4 06-05-2005, 08:11 PM

Thank you. It is a sample.