I understand the guidance on positioning text and numeric columns. I also have a column, though, that presents a boolean (Y/N) value. Is it appropriate to align it to the left as text, or right as numeric?
It doesn't make sense to be concerned about alignment of Y and N. Better to make the column fit it's content and center the text. Or use a symbol like Harshal said in the comment. See for example:
The column header should be short to avoid getting to much white space. If this isn't possible the alignment of Y/N should be the same as the header. So it should be either the first or the last column:
If the text length is variable, see the following example: Which column is easier to scan?
I don't think that the alignment is the most important element in your column of yes and no. The most important is helping the people to scan easier the column.
Y or N are easier to scan than Yes and No.
Since there are only 2 options, I would really consider using Y only or N only, as you can see in the image below.
- Color marking might be a good option
- As well, a switch could be easeful, especially if your user is able to change the value in column.