An examination that is so difficult that many people get low scores and only a few get
high scores would create a _____ .
a. negatively skewed distribution
b. bimodal frequency polygon
c. rectangular distribution
d. positively skewed distribution
Question 2
When scores represent ratio level of the measurement, the _____ is the preferred measure of
central tendency and the _____ the preferred measure of variability.
a. mean; range
b. mean; standard deviation
c. median; mean
d. median; standard deviation
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