This option can be helpful for the learners' accounts of your admins or if you have other learners whose results shouldn't be shown in the statistics
Follow the next steps to hide the learner from statistics:
Open Learner Statistics and choose the learner from the list
In the Learner Profile Pop-up, turn on the toggle
Then, the learner will disappear from the Statistics, Management learners and Team lists
It will be possible to find such learners in the Hidden Learners list. Go back to the Learner Statistics page, click on the three dots and choose Show Hidden Learners option