In my education class, we had to do group presentations. My group made our PowerPoint, then emailed our professor asking if we should add/change anything. She had a few things she wanted us to add, so we did. Well, we got our grade back today, and she took points off (gave us a 4/5) because "it needed more data/statistics." And that was literally the only negative feedback she gave us -- her other comments included "Good presentation" and "Good group dynamic."
If it needed more data/statistics, why didn't she say so when we asked about any changes we needed to make?
I think it's completely unfair that she took points off for this because she never said we needed ANY data/statistics! (It was nowhere in the guidelines for the project she gave us, and she didn't mention it when we emailed her either).