# Finding the standard deviation

• Nov 25th 2008, 11:14 PM
ansimax
Finding the standard deviation
OKay it gives me N ( 42 ) Xbar ( 9.27 ) and s ( .44 ) but i don't know which formula to use to get the standard deviation out of this. Please help! It's 2 14 in the morning and i need it for class tomorrow!.
• Nov 26th 2008, 02:30 AM
mr fantastic
Quote:

Originally Posted by ansimax
OKay it gives me N ( 42 ) Xbar ( 9.27 ) and s ( .44 ) but i don't know which formula to use to get the standard deviation out of this. Please help! It's 2 14 in the morning and i need it for class tomorrow!.

Do you mean n = 42 (sample size) and $\bar{x} = 9.27$ (sample mean) ? And s = 0.44?

Can you define exactly what s ( .44) means please .... If it means what I think it means, then the answer you want is contained in your question ....
• Nov 26th 2008, 09:23 AM
ansimax
yes n is the sample size but the little s is not standard deviation, it said the standard deviation was the little circle with a line on the top of it, i can't remember the name of it