double counting

Hi there, I have an interesting database of what I thought was 11000 clients. Turns out for my person identifier variable I have the same individual reported more than once (I noticed when I sorted). when there is a duplicated the same info is recorded in the columns. Is there a way of counting...

Hi there, I have merged two client datasets. The first dataset contains demographic information about the individuals, the second contains those same individuals stock purchases over time. When I merge them using the unique person identifier number I obviously have several rows now for...