# DABench Task 551 - What is the mean of the DBH_CM column?

## Task Description

What is the mean of the DBH_CM column?

## Concepts

Summary Statistics

## Data Description

Dataset file: `tree.csv`

The data is available in the `train.csv` file in the public directory.

## Constraints

Calculate the arithmetic mean of the 'DBH_CM' column. The answer should be rounded to the nearest hundredth. Do not consider missing values, outliers, or data error possibilities, as it was stated there are no missing values in this column and no further cleaning or preprocessing is needed for this problem.

## Files

- `train.csv` - The training data
- `sample_submission.csv` - A sample submission file in the correct format

## Submission Format

Submit a single-row CSV with columns `id,answer`.

- `id`: always `551`
- `answer`: `@mean_dbh_cm[<mean_value>]` where `<mean_value>` is a float with two decimals.

## Evaluation

Submissions are evaluated on **exact match** with the ground truth answer (with tolerance of 0.01 for floating-point values).

## Goal

Provide the correct answer in the specified format.

## Difficulty Level

Easy
