Card 87 / 153: A question on the NCE or CPCE regarding a preexperimental design uses the letters XO. The letters stand for
A)
X stands for treatment and O stands for observation, measurement, or score
B)
X is the mean while O implies that no treatment was given.
C)
X is the median while O stands for other group
D)
X stands for treatment while O is the number of observations taken
Answer:
A) X stands for treatment and O stands for observation, measurement, or score
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