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## Answers

Let's get the mean first (which is also the third mean)

Mean = a₁ + an

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2

Mean = -9 + 9

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2

Mean = 0

**The third mean is 0.**

The second and third mean are between -9 and 0 are: -6 and ,3

The fourth and fifth mean between 0 and 9 are: 3 and 6.

Therefore, the means are (in bold fonts):

-9,

**-6, -3, 0, 3, 6,**9