1.103 Quartiles of Normal distributions.
The median of any Normal distribution is the same as its mean. We can use Normal calculations to find the quartiles for Normal distributions.
1.103
(a) The area to the left of the first quartile is 25%. The corresponding is -0.67. The area to the left of the third quartile is 75%. The corresponding is 0.67. (b) For the first quartile, . For the third quartile, .