
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given a set of positive numbers $x_{1}$, $x_{2}$, $x_{3}$, $x_{4}$ with a variance of $s^{2}=\frac{1}{4}(x_{1}^{2}+x_{2}^{2}+x_{3}^{2}+x_{4}^{2}-16)$, find the mean of the data $x_{1}$, $x_{2}$, $x_{3}$, $x_{4}$.

Present the answer in LaTex format: \boxed{Your answer}
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