> Facebook’s daily to monthly user ratio, or stickiness, held firm at 66 percent where it’s stayed for years, showing those still on Facebook aren’t using it much less. What are the precise definitions of daily and monthly active users? To be a daily user, do you literally have to use Facebook every day for a month?
To get the ratio of DAU to MAU, you can either take the average DAU for each day of the month, and then compare that to the MAU, or you can take the DAU to MAU ratio for each day and then average that. They'll both come out about the same (doing it the second way smoothes it out just a bit more because of the loss of precision which makes the month to month comparisons or quarter to quarter a little smoother).