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Question
Consider the data set 14, 18, 14, 14, 10, 29, 33, 31, 25. If you add 20 to each of the values, then
Options:
A .  both mean and variance change
B .  both mean and variance are unchanged
C .  the mean is unchanged, variance changes
D .  the mean changes, the variance is unchanged
Answer: Option D


-NA-


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