Sometimes, you might wish you'd given a playlist a different name. There's a way to do that, but it's a bit of a work-around.
1. Select the playlist you want to rename.
2. Tap the multi-select icon.
3. Tap "Select All."
4. Tap the tag icon.
5. Tap "New Playlist," and enter the name you'd like for the playlist. You may now delete the old playlist, but be sure to choose "No" when you are prompted to delete the questions within the playlist.