SOLUTION: A data set has a z-score of 3 for the value 32 and a mean of 20. Find the standard deviation. I don't understand how to solve it. Instead of just giving the answer, could you

Algebra ->  Sequences-and-series -> SOLUTION: A data set has a z-score of 3 for the value 32 and a mean of 20. Find the standard deviation. I don't understand how to solve it. Instead of just giving the answer, could you       Log On


   



Question 308340: A data set has a z-score of 3 for the value 32 and a mean of 20. Find the standard deviation.

I don't understand how to solve it. Instead of just giving the answer, could you explain? Thank you. :-)

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The z-score is defined by
z=%28x-xave%29%2Fsigma
where x is the value, xave is the mean, and sigma is the standard deviation.
Since you know x, xave, and z, solve for sigma