DPA plots


Hi Colin,

I’m quite new to the whole concept of SCA and I suddenly had this silly question (but it got me confused a lot). So, I thought I could ask this here. While doing DPA on say, AES-128, for a subkey guess (example:byte 1), I take the mean of all traces with LSB=0 and LSB=1, compute the difference and then plot this difference of means. When we visualize this, should the difference plot be bounded like the correlation plot (between -1 and 1) or can it go beyond this interval as well? In other words,
Thanks in advance.