CTR & Quality Score Relation

CTR & QS Fluctuates

[chriskriag]

Hello,

I am running a campaign with 4 adgroup, there are keywords who have 0 CTR for more than a week or since the inception of campaign, the campaign is 4 months old. The QS remains the same for keywords with 0 CTR(Note - These keywords have impressions but not clicks) and most between 2.5 - 4.5 Avg position. Does CTR impacts QS?

If yes, then how these keywords are unaffected?

[RhinoFish]

QS is mostly based on CTR.

When new (little or no data), G uses all it knows (and they know a lot) to try and estimate what the likely CTR will be.