average

ข้อมูลเบื้องต้น

In September 2016, Facebook admitted that it had inflate viewing time data by between 60 and 80%, which a spokesperson said was because only video views that lasted more than three seconds were counted; the “Average Duration of Video Viewed” metric did not factor in any views shorter than three seconds, thus boosting the average.

https://www.nytimes.com/2018/11/06/technology/myanmar-facebook.html