- (E) Ninety-five percent of the scores in a normal distribution fall between the z scores of –2 and
+2. Z scores measure the distance from the mean in units of standard deviation. The percent of
scores falling under each area of the normal curve is predetermined; there’s no way around
memorizing it: 68 percent within one standard deviation, 95 percent within two standard
deviations, and 99 percent within three standard deviations.
marvins-underground-k-12
(Marvins-Underground-K-12)
#1