The mean of 2, 5, (x + 2), 7 and 9 is 6. Find the median.
-
A.
5.5 -
B.
6.0 -
C.
6.5 -
D.
7.0
Correct Answer: Option D
Explanation
(frac{2 + 5+ (x + 2) + 7 + 9}{5} = 6 implies 25 + x = 30)
(x = 5 therefore x + 2 = 5 + 2 = 7)
Arranging the numbers in ascending order: 2, 5, 7, 7, 9.
Median = 7.0