PDA

View Full Version : Z-score for the value 88, when the mean is 95 and the standard deviation is 7?

brandy32
Jun 9, 2010, 06:12 AM
Statsistics question and math question. Please help as soon as possible thanks
ebaines
Jun 9, 2010, 06:56 AM
z = \frac {x-\mu} {\sigma} = \frac {88-95} 7 = -1