
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 Xiao Wang's math scores in five exams were 86, 78, 80, 85, and 92, respectively. Calculate the measure of variation that Teacher Lin is most concerned about.

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