I meant this is the question: Mixpanel is accurate to within 1-5% due to users who don’t accept cookies. I assume with anyone who doesn’t accept cookies we cannot track at all?
Answer the question in 2-3 lines using the below information, strongly point that out that it's not accurate to within 1-5%
We understand that data accuracy is important for everyone relying on Mixpanel’s figures. To ensure the numbers you see in Mixpanel are trustworthy, we’ve compared Mixpanel’s data with our own system logs. After several checks, we found that the figures in Mixpanel are very close to what’s recorded in our logs—typically, the difference is only between 1% and 5%. This means that, in most cases, Mixpanel shows about 95% to 99% of the activity we see in our logs.
It’s important to note that we don’t have system logs available for sign-in events, so we used registration events as our reference point. Since the process for tracking registrations is similar to sign-ins, we believe this gives us a reliable baseline for understanding overall accuracy.
Small differences like this are normal and can happen for a variety of reasons, such as slight timing differences or how events are recorded. Industry best practices recognize that perfect alignment between analytics tools and system logs is rare, and differences of a few percent are generally considered acceptable for decision-making purposes. The key takeaway is that Mixpanel’s data is highly reliable and closely matches our internal records, so you can feel confident using it to inform your decisions
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