Un asked six friends how many different foreign countries they'd been to. He recorded 0, 1, 1, 2,
5, and 9 countries visited
What is the mean absolute deviation of countries visited?
Round to the nearest tenth, if needed.
A. 0
B. 2.7
C. 2.9
D. 3

MAD = Σ|x - mean|/n

mean = (0 + 1 + 1 + 2 + 5 + 9)/6 = 18/6 = 3

MAD = (|0 - 3| + |1 - 3| + |1 - 3| + |2 - 3| + |5 - 3| + |9 - 3|)/6 = (3 + 2 + 2 + 1 + 2 + 6)/6 = 16/6 = 2.7 countries.

Step-by-step explanation:

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the answer is c)8

step-by-step explanaction: