
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
On Arbor Day, a class at a certain school divided into 10 small groups to participate in tree planting activities. The number of trees planted by the 10 groups is shown in the table below:

| Number of Trees Planted | 5   | 6   | 7   |
|--------------------------|-----|-----|-----|
| Number of Groups         | 3   | 4   | 3   |

The variance of the number of trees planted by these 10 groups is ______.

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