The difference between z scores and standard scores is that a. ...

[go.lag]

The difference between z scores and standard scores is that
 
  a. z scores can never be negative, whereas standard deviation scores always
   are
   b. z scores can only be calculated with reference to the mean, whereas
   standard scores relate to the median
   c. z scores can only be calculated with reference to the standard deviation,
   whereas standard scores relate to the variance
   d. none of these, since z scores are standard scores

Question 2

The percentage values on the z score table are only valid when
 
  a. the z scores are positive
  b. the raw score mean equals 50
  c. the raw score mean is greater than 50
  d. the distribution is normal

[leannegxo]

Answer to Question 1

d

Answer to Question 2

d