
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
Two students, A and B, have taken five math tests this semester with scores as shown in the table (unit: points):

|        | Test 1 | Test 2 | Test 3 | Test 4 | Test 5 |
|--------|--------|--------|--------|--------|--------|
| A      | 86     | 83     | 90     | 80     | 86     |
| B      | 78     | 82     | 84     | 89     | 92     |

$(1)$ Fill in the table:

|        | Median | Mean | Variance |
|--------|--------|------|----------|
| A      | ______ | 85   | ______   |
| B      | 84     | ______ | 24.8    |

$(2)$ Please use the statistical knowledge you have learned to evaluate the math scores of students A and B from two different perspectives.

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