Oh, I assumed that your post was about the average effect of military training, not whether any subgroup at all benefits, since the average effect seems more relevant.
Both could be relevant. It could be that a subgroup that makes up the majority of the military gets benefits, so the median is higher productivity. But due to a small subgroup, the mean is lower. Any result seems interesting here.
[ETA: Don’t you think something like, “People in the Army have lower productivity but people in the Air Force have higher” would be interesting? I just am looking for something that’s relevant to the central question of the post: can training have long-term benefits on self-discipline?]
Oh, I assumed that your post was about the average effect of military training, not whether any subgroup at all benefits, since the average effect seems more relevant.
Both could be relevant. It could be that a subgroup that makes up the majority of the military gets benefits, so the median is higher productivity. But due to a small subgroup, the mean is lower. Any result seems interesting here.
[ETA: Don’t you think something like, “People in the Army have lower productivity but people in the Air Force have higher” would be interesting? I just am looking for something that’s relevant to the central question of the post: can training have long-term benefits on self-discipline?]