'Edited the Biography' means that the Biography Text was changed or at least the profile was saved. Sometimes when you start to leave a profile, it says 'do you want to leave without saving?' I get that frequently, think I saved my last changes, but if I am not sure, I will save it, which could leave that message but nothing seems to have been changed. Normally it will show the differences.
'Edited the Data',I think, is when something other than the 'text' was changed, ie merges. I reviewed my contributions to see when I have that notation, other than merges.
I have that notation in my Contributions when I changed the father on a bunch of 'children' profiles from one person to the other. Each of the children profiles state 'added father's name as father for' the child's records. Then there is a 2nd item that says I 'edited the data' which is for the 'mother' of those children. I am 'assuming' that is because when you add the parent's ID at the top of the page, down at the bottom the checkbox is checked to indicate that the parents are married, so the edited the data was to make sure the parents were married.
I found another item that had 'Edited the Data', but it showed the marriage date and location was changed.
Based on what I found, I would check the contributions of the person that 'made the Edited Data' change and see what else was done at the same time as the 'Edited the Data' was shown in the Contributions. In this case, the person had added the wife of Gideon as the mother for a child, which is the same situation as I saw in my own contributions above.