Fill in the following blanks. a. A standardized variable always has mean and standard deviation . b. The z-score corresponding to an observed value of a variable tells you . c. A positive z-score...

Fill in the following blanks.

a. A standardized variable always has mean and standard deviation .

b.  The z-score corresponding to an observed value of a variable tells you .

c. A positive z-score indicates that the observation is the mean, whereas a negative z-score indicates that the observation is the mean.