Short data assignment (very easy) -> in-person gathering of applicants for information -> larger data assignment. The larger assignment, while not not really hard, was LONG and took some work--to the point that you were questioning if you were working for free for them. I believe I answered every question neatly, but I did not get the position. After asking for an explanation, I was told that they wanted "a more accurate description" and an apology for the vague explanation because this is a "standard exercise". This is an insane cop-out, as a standard exercise should mean very clear guidelines for what you are looking for, and therefore MUCH more informative explanations to what I did wrong in the days I spent working for free for them. Do not apply here unless you want to waste your time.