# RMSE Evaluation

You must calculate the items sold for all 100 item times for all of the days in the third quarter of 2021. The difference between your estimate of distance and the actual distance will result in a [root mean square](https://en.wikipedia.org/wiki/Root-mean-square_deviation) (RMSE) error, which forms the basis of your evaluation and leaderboard rank.

## Submission Format

The file should contain a header and have the following format:
```
id,item_count
0,6.2
1,6.2
2,6.2
3,6.2
4,6.2
```