Let's cut to the chase. When you're analyzing stats, you got two main options: raw volume based review or ratio based review. Each has its merits but also pitfalls. Raw volume review - you look at total clicks, conversions, CTR, EPC, etc. It's straightforward but can be misleading if traffic quality varies wildly between days or campaigns. Higher volume doesn't always mean better quality. Ratio based review - you analyze conversion rate, CPA, ROI, and other relative metrics. It gives a clearer picture of efficiency but can mask volume drops. You might see a high conversion rate but total volume could be tanking, meaning overall profit drops even if the ratio looks healthy. Both approaches should complement each other. Start with raw numbers to identify anomalies and then drill down with ratios. If you find outliers with suspiciously high conversion ratios on low volume days, dig deeper. It's basic data hygiene but a step most overlook. Just remember, better data leads to better decisions. Don't rely on one metric alone, especially when scaling or cutting campaigns.