单项选择题

An analyst takes a sample of yearly returns of aggressive growth funds resulting in the following data set: 25, 15, 35, 45, and 55. What are the range, mean absolute deviation (MAD), and sample variance of the data set range MAD variance()①A. 20 12 250 ②B. 25 60 1000 ③C. 40 12 250

A. ①
B. ②
C. ③

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