This is interesting. I started running a campaign, the keywords are targetted to the keywords on my site. I started the campaign at .15 a click. I got 3 clicks, and had a CTR of 16.66% then it deactivated and said raise QS or bid .20 cents! what?!!?? the keyword still shows as quality score of "ok" whats going on here.... Also too, is quality score calculated on a campaign wide bases or keyword bases or both?
Your bids will need to go up if you're not getting a good QS. QS is based per keyword, and you may need to separate your keywords into separate adgroups if they're not grouped correctly based on user intent...etc. Plus it seems with newer campaigns the QS takes a few to sort itself out and decide if it really likes you or not. I've had words go from "Great" one week to "Ok" the next, then back to "Great"...it's the enigma that is Google's QS system.
Quality Score is assigned on a keyword level basis; however, it can also affect your overall ad group and campaign performance. Google ranks each keyword on a three-level basis - Great, Okay, and Poor. These rankings are used in conjunction with your set CPC bid to formulate an overall score known as Ad Rank. This means that an ad with a "Great" Quality Score has to pay less than an ad with a "Poor" Quality score to rank for a comparative position. In addition, an ad with a "Great" Quality Score will normally have a lower minimum CPC bid then one with a "Poor" score.
Google Quality Score is actually based on a lot of factors that are quite hard to determine. Also, Google algorithms change frequently, which makes it harder to determine how the QS is actually calculated in the long run.
I have said this many times in the past. Just because you have a 16% CTR it does not guarantee a great QS. In this case it means your text ad is actually under performing compared to the keywords historical averages from other competitors. You need to raise your text ad CTR to get QS higher and min cpc lower I have seen this happen hundreds of times. Sometimes 0.50% CTR is we better than a 16% CTR. It just depends on the keywords and historical average for that keyword. This is why nobody can log into there account, glance at CTR and say, wow... QS is great today... its impossible...