This is Google AdWords’ rating of the quality and relevance of keywords that are used in PPC campaigns. It’s primarily determined by the expected CTR (clickthrough rates), the relevance of the ad copy, landing page relevance, quality, and other factors. However, at almost 60%, clickthrough rates is the most important aspect of Quality Score.
Quantitative data are any measurable, aggregated pieces of information. It typically refers to data analytics which reflects application or website usage and traffic. This analysis helps you determine which place you should focus on while designing, developing and conducting research for your site.