# DABench Task 326 - Create a new feature named "event_hour" that represents the hour of the day (in 24-hour format) when each event occurred. Perform a correlation analysis to determine if there is a relationship between the event hour and the event type (EVENTMSGTYPE).

## Task Description

Create a new feature named "event_hour" that represents the hour of the day (in 24-hour format) when each event occurred. Perform a correlation analysis to determine if there is a relationship between the event hour and the event type (EVENTMSGTYPE).

## Concepts

Feature Engineering, Correlation Analysis

## Data Description

Dataset file: `0020200722.csv`

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

## Constraints

{
Extract the hour from the WCTIMESTRING column using string manipulation functions.
Calculate the Pearson correlation coefficient (r) to assess the strength and direction of the linear relationship between event_hour and EVENTMSGTYPE.
Assess the significance of the correlation using a two-tailed test with a significance level (alpha) of 0.05.
Report the p-value associated with the correlation test.
Consider the relationship to be positive if the p-value is less than 0.05 and the correlation coefficient is greater than or equal to 0.5.
Consider the relationship to be negative if the p-value is less than 0.05 and the correlation coefficient is less than or equal to -0.5.
If the p-value is greater than or equal to 0.05, report that there is no significant correlation.

## Submission Format

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

- `id`: always `326`
- `answer`: three key-value pairs separated by spaces: `@relationship[<relationship>] @correlation_coefficient[<r_value>] @p_value[<p_value>]`

`<r_value>` is between -1 and 1 (two decimals); `<p_value>` is between 0 and 1 (four decimals); `<relationship>` is `positive`, `negative`, or `none`.

## 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

Hard
