Page Authority vs Domain Authority

[kchandler]

I'm hoping this is a quick and simple question. Sometimes when using the open site explorer or the keyword difficulty tool i find that some pages have a higher "page authority" than the "domain authority."

That seemed odd to me, is there a correlation between the two? You would think by default as you grow your page authority the domain authority increases as well?

So i guess my question would be, what happens on a page to give it a higher page authority than domain authority?

[kchandler]

I see, i wonder what those metrics are. I have seen some pages with a page authority of 50 with only 3 backlinks. So I'm sure their is a correlation with quality of backlinks along with the amount.

[AdamThompson]

I assume it is because of the math that is used to calculate Page Authority vs Domain Authority. Since both have a maximum score of 100, any given link has to count fewer points towards domain authority than it does towards page Authority, or your Domain Authority would be in the hundreds or thousands (since you have to combine links to all the pages to get domain authority).

"as you grow your page authority the domain authority increases as well?"
Yes, but probably not as much. If a link grows your page authority by one point, maybe it only grows your domain authority by 0.3 points.

Hope this makes sense and is helpful.