If the standard deviation of the score on this test is zero, we should conclude
a. nobody received even one question correct.
b. half the scores were below the mean.
c. half the scores were above the mean.
d. a computational error was made.
e. everybody received the same score.
Question 2
If you could have one wish granted concerning this test, you should choose a score
a. above the mean.
b. above both the mean and the median.
c. equal to the first quartile.
d. equal to a z-score of +1.5.
e. equal to a T-score of 55.
An example of color blindness test. A person with red-green color blindness would not be able to dis
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