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1. Google Ranking Factors: Correlations,
Testing, & Hypotheses

2. What does it mean? How should
we apply the data?
Correlation

3. Correlation does NOT
say why these results
rank higher than these
results
More on Rand’s Blog

4. Correlation tells us what
features, on average, the
results that rank higher have
which the lower ranking results
do not have.
More on Rand’s Blog

5. Correlation tells us what
features, on average, the
results that rank higher have
which the lower ranking results
do not have.
More on Rand’s Blog
I’m actually MORE interested in this
than I am in whatever Google’s
actually using to rank the results!

6. Via Moz’s 2013 Search Ranking Factors

7. Via Moz’s 2013 Search Ranking Factors
To me, this says individual pages still
matter, but there’s a lot of weight on the
hosting domain.

8. Via Moz’s 2013 Search Ranking Factors
MozRank used to be higher, and so did
linking root domains. Google’s probably
getting more complex.

9. Via Moz’s 2013 Search Ranking Factors
$100 says that if we could get more comprehensive
brand mention data, this correlation would start to
look a lot like links

10. Good discussion about Google+ correlations in this post
Google+ is just too damn high.

11. Good discussion about Google+ correlations in this post
Google: “Most of the initial discussion on this thread seemed to take from
the blog post the idea that more Google +1s led to higher web ranking. I
wanted to preemptively tackle that perception.”

12. Good discussion about Google+ correlations in this post
To me, that’s Google working really hard to NOT say “we don’t use any data
from Google+ (directly or indirectly) at all in our ranking algorithms.” I would
be very surprised if they said that.

13. Good discussion about Google+ correlations in this post
That said, all of the correlations with social are high. That tells me the things
that make content have success on social probably have a lot of overlap
with what makes content successful in Google.

14. Good discussion about Google+ correlations in this post
Domain name keyword matching continues to show decline.

15. Via Mozcast
PMD was as high as 5%
two years ago. EMD was
almost 6%. Both have
fallen precipitously.

16. Basic introduction to LDA and topic-modeling systems here.
We were able to build a better keyword-modeling system in 2013, and
correlations were higher than in past studies looking at raw keyword
repetition or use in title elements.

17. More on rankings and page load time here.
Response time was interesting, but it’s likely a very small direct factor and
relatively big indirect factor (i.e. users like fast-loading pages, and people
link to/share what they like) 

18. See How Unique Does Content Need to Be.
Last, more content still seems to, on average, slightly overperform vs. less
content. I’d question any causality here, though.

19. I hope to see many, many more correlation tests
and more things considered! Causal or not,
correlation data is incredibly useful.

20. What can we learn from a recent
SEO test?
Testing

21. Hypothesis:
It seems like Google is starting to ignore or
discount anchor text in links.

22. Here were the test conditions:
#1: Three-word keyword phrase in Google.com US
#3: We pointed links with NO query-matching anchor text from
20 unique, not-particularly-on-topic, high DA domains at result
A and EXACT-anchor-text match links from the same pages at
result A.
#2: At start of test, result A ranked #20, B ranked #13.

23. After 3 Weeks:
All of the links had been indexed by Google
Result B (with exact-match anchor text) ranked #9 in
Google.com US
Result A (with non-query-matching anchor text) ranked
#18 in Google.com US

24. Of Additional Interest:
Result B (with exact-match anchor text) ranked #4 in
Google.co.uk
Result A (with non-query-matching anchor text) ranked
#19 in Google.co.uk
~5 of the 20 linking domains were from UK sites

25. Takeaways:
#1) Anchor text still matters
#2) Geographic location of links matters

26. I’d love to see lots more testing in the SEO
world. Even imperfect tests are fascinating and
useful, IMO.

27. Three guesses Rand has about
what Google’s up to
Hypotheses

28. Hypothesis #1: Carousels and “Brand” are Connected
However Google’s determining carousel placement is also
connected to their entities and brand signals

29. Hypothesis #2: There’s an
aspect of mention frequency
and mention source in
Google’s brand/domain bias
More and more, these queries return
results that look like what you’d get if
you polled people on the street to tell
you what brands they most
associated with the phrase “men’s
sneakers”

30. Hypothesis #3: Google is using
search & visit patterns to connect
words & phrases and rank results
Why do they list these 3 in the top
10? My guess – it’s because they are
most often visited by people who’ve
done searchers around “luxury
resorts Australia”

31. Hopefully, these hypotheses can lead to
experiments, results, and more sharing 