all we can assume is that Lanfear is 100% as strong as it is possible to be and Morgase is as weak as it is possible to be. But without knowing what those actual numbers are we cannot possibly calculate a Mean that is accurate.

What I'm getting at is this ... you can set a Power scale (as in Units of saidar), but it's all speculation since the author never set it out in the books or in any quote. You can say Morgase can channel 1 Unit of Saidar, but that tells us nothing of what Lanfear can Channel.

Even saying we think Morgase/Lanfear are 5.73 SDs from the Mean is meaningless because we have to make assumptions on populations and frequency of their power level in nature. There could be 10 women at Lanfears level in a 7B population, we simply don't know. All we do know is that there IS a Bell Curve distribution of strength ... and we only know that because RJ said so in an interview/Q&A.

I've been debating this with a few people on the forum for years and we've never been able to come to a conclusion ... we all have a similar continuum of who is stronger than whom, but our scales are totally arbitrary because the author (IMO deliberately) made Power levels vague. Each of us has made the Bell Curve work for our own scales, but none of us can make it 100% accurate without more information.