Hi I have goofed up in my newbieness and want to make some changes, how can I reset the quality score of some keywords that have gone really low? jayden
Two major things drive your QS: relevancy of keywords to ads to landing page and your click rate. If you don't have good relevancy, you are likely not choosing the right keywords. More info can be shown by hovering over the cartoon speech-like bubble under the Status column. If you have good relevancy, the only way to increase QS is to increase CTR. More quality score details and how it works here.
Adwords seems to keep the data on the keyword even after you delete it, so I don't think this will work.