On a normal curve,95 percent of all the cases would be found between which two standard deviations (SDs)?
A)0 and +3
B)-1 and +1
C)-2 and +2
D)-3 and +3

Question

Quizplus · Accepted Answer

According to the empirical rule, approximately 95% of the data falls within two standard deviations of the mean. Therefore, the answer would be -2 and +2 standard deviations from the mean, which is option C.

On a Normal Curve,95 Percent of All the Cases Would