A Raw Score from a Sample May Be Converted to a Standard

Multiple Choice

A raw score from a sample may be converted to a standard score by.

A) $z = \frac { X - \mu } { \sigma }$
B) $z = \frac { X - \bar { X } } { S }$
C) $z = \frac { X - \bar { X } } { \sigma }$
D) $z = \frac { X - \bar { X } } { s }$