Normally, when displaying a table of information and providing total rows and columns, the rows in the table total into a totals column and the columns in the table total into a totals row. Essentially, each row aggregates across the columns, while each column aggregates down the rows. However, there are certain analytical packages that include what is referred to as across then down and down then across aggregation.
In across then down aggregation, the first row aggregates normally across the columns of the table. However, in the second and subsequent rows, the total value from the previous row becomes the starting value for the first column in the next row. Similarly, in down then across aggregation, the first column aggregates normally down the rows of the table but, in the second and subsequent columns, the total value from the previous column becomes...
