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4 votes
The median of the list

n, n+3, n+4, n+5, n+6, n+8, n+10, n+12, n+15

is 10. What is the mean?

User Mirancon
by
8.0k points

2 Answers

5 votes

Answer:

11

Explanation:

The middle number in the 9-number list is
$n+6$, which is given as 10. Thus
$n=4$. Add the terms together to get
$9n+63 = 9\cdot 4 + 63 = 99$. Thus the mean is
$99/9 = \boxed{11}$.

User WIWIWWIISpitFire
by
7.6k points
2 votes
The mean is given by


\frac{n+(n+3)+(n+4)+(n+5)+(n+6)+(n+8)+(n+10)+(n+12)+(n+15)}9=\frac{9n+63}9=n+7

The median is
n+6=10, which means
n=4, and so the mean is
4+7=11.
User Lonegunman
by
8.1k points

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