Correlation direction is the plus-or-minus sign on a factor’s correlation coefficient. It tells you whether that factor’s values tend to move in step with a page’s ranking position or against it — nothing about how strong the relationship is, just which way it points.
| Term | Correlation Direction |
|---|---|
| Category | Statistics and Evidence |
| Also known as | Signal Direction |
| Where it appears | Correlation tables and recommendations |
What it means in RankGear
Every factor RankGear measures gets a correlation coefficient against ranking position across the pages in a run. The direction is simply the sign of that coefficient — positive or negative. It shows up in the correlation tables and in the recommendations built from them, and it is usually the first thing worth reading about a factor: before you weigh how strong the relationship is, the sign tells you which way it runs.
How to interpret it
A positive sign means the factor’s values and the ranking metric rise and fall together; a negative sign means they move in opposite directions. Read the sign alongside the strength (how far the coefficient sits from zero) and the sample it came from — a direction drawn from a handful of URLs is noisy and can flip between runs. A coefficient sitting close to zero has no real direction at all: treat it as “no clear relationship” rather than a faint positive or negative. And confirm the value is actually measured, not missing or defaulted to zero.
| Sign | What it tells you |
|---|---|
| Positive (+) | Factor value and the ranking metric rise and fall together. |
| Negative (−) | As one rises the other falls — they move in opposite directions. |
| Near zero | No reliable direction; effectively no relationship to act on. |
Example
Say a run over twenty competing pages shows word count with a positive correlation direction and moderate strength, while page load time shows a negative direction. The signs alone suggest longer pages tend to sit alongside the stronger-ranking set and slower pages alongside the weaker one — a hypothesis to test, not a rule to follow. If a second run on a different keyword flips word count to negative, that reversal is your cue to distrust the first read and lean on strength and sample size before drawing any conclusion.
Important considerations
- Direction is a comparative indicator within one run’s SERP sample, not a Google ranking score — a sign never proves a factor makes pages rank.
- Correlation is not causation: a consistent sign shows association, not that changing the factor will move your rankings.
- Small SERP samples are unstable and a sign can flip from run to run, so always weight direction by sample size and strength.
- A coefficient near zero is effectively no direction; don’t treat it as a weak signal to act on.
- Whether a positive or negative sign is “good” depends on how the ranking metric is encoded in the table, so read it with RankGear’s recommendation rather than in isolation.
Related terms
Part of the RankGear glossary · how RankGear measures · the 870 factors.