Tyra made a mistake while she was creating her chart. Which best identifies the mistake Tyra made?

The mistake made by Tyra is identified as personal error.

Explanation:

When an experiment is performed, the results which came in the final step or after interpreting experiment results are not 100% correct results.

Because there are many types of errors which can influence an experiment result like an instrumental error, personal error/human error.

The personal error is the error in measuring results or interpreting the results by the scientist due to some reasons like attention deviation or inability to take accurate measuring.