
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
The mean and median values of the given set of numbers: {25, 18, 10, 27, 18}, change after Thursday's attendance is corrected to 15. Determine the new mean and median values.

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