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Same as how TV and Radio ratings are done - statistically significant sampling of the population via surveys: https://support.alexa.com/hc/en-us/articles/200449

Same as how TV and Radio ratings are done - statistically significant sampling of the population via surveys: https://support.alexa.com/hc/en-us/articles/200449744-How-are-Alexa-s-traffic-rankings-determined- https://support.alexa.com/hc/en-us/articles/200449744-How-ar...

cm2012 8y ago
The global data panel is not surveys of a random population. It's data collected from people using Alexa toolbars. It's highly weighted towards desktop traffic and the kind of people who install toolbars.
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