How is Page Authority calculated?

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Tags

1. #evaluating
2. #linking
3. #links
4. #ranges
5. #ability
6. #factors
7. #score
8. #calculated
9. #single
10. #higher
11. #authority
12. #domains
13. #scores
14. #including
15. #greater
16. #domain
17. #multiple
18. #number
19. #total
20. #corresponding